diff --git a/changes/28.0.2.md b/changes/28.0.2.md
index 017bbefb4..4380ce21a 100644
--- a/changes/28.0.2.md
+++ b/changes/28.0.2.md
@@ -1,3 +1,6 @@
+* Add characters:
+  - LATIN CAPITAL LETTER AU (`U+A736`) (#1689).
+  - LATIN SMALL LETTER AU (`U+A737`) (#1689).
 * Refine shape of Tshe and Cyrillic Capital Letter Te with Middle Hook (`U+A68A`) (#2123).
 * Remove bottom serif of Cyrillic Small Letter Ghe with Middle Hook (`U+0495`) under italics.
 * Make serif variants of Cyrillic Small Letter Tall Te (`U+1C84`) respond to italics.
diff --git a/packages/font-glyphs/src/auto-build/mark-doppelganger.ptl b/packages/font-glyphs/src/auto-build/mark-doppelganger.ptl
index 888d9af29..c17dd8440 100644
--- a/packages/font-glyphs/src/auto-build/mark-doppelganger.ptl
+++ b/packages/font-glyphs/src/auto-build/mark-doppelganger.ptl
@@ -2,7 +2,6 @@ $$include '../meta/macros.ptl'
 
 import [Arcs Quadify ShapeConv] from "typo-geom"
 import [mix linreg clamp fallback] from "@iosevka/util"
-import [Box] from "@iosevka/geometry/box"
 import [TieMark AnyDerivingCv ScheduleLeaningMark LeaningMark LeaningMarkSpacer] from "@iosevka/glyph/relation"
 
 import [DesignParameters] from "../meta/aesthetics.mjs"
diff --git a/packages/font-glyphs/src/letter/latin-ext/lower-ae-oe.ptl b/packages/font-glyphs/src/letter/latin-ext/lower-ae-oe.ptl
index 6ac67c776..46a6fb20d 100644
--- a/packages/font-glyphs/src/letter/latin-ext/lower-ae-oe.ptl
+++ b/packages/font-glyphs/src/letter/latin-ext/lower-ae-oe.ptl
@@ -133,31 +133,35 @@ glyph-block Letter-Latin-Lower-AE-OE : begin
 				include : InvEShape 1 df revbody
 
 	do "u subglyphs"
-		define [ueUPart df fSlab] : new-glyph : glyph-proc
-			local { subDf } : SubDfAndShift 0 df 0
-			local ada : subDf.archDepthA SmallArchDepth df.mvs
-			local adb : subDf.archDepthB SmallArchDepth df.mvs
+		glyph-block-import Letter-Latin-U : UShapeGroup SmallUConfigT
 
-			local abarRight : df.middle + [HSwToV : 0.5 * df.mvs]
-			include : nShoulder
-				left -- abarRight
-				right -- (df.rightSB - OX)
-				stroke -- df.mvs
-				ada -- adb
-				adb -- adb
-			include : FlipAround df.middle (XH / 2)
-			if fSlab : include : HSerif.lt df.leftSB XH SideJut
+		define df : DivFrame para.diversityM 3
+		define { subDf shift } : SubDfAndShift 1 df 0
+		local ada : subDf.archDepthA SmallArchDepth df.mvs
+		local adb : subDf.archDepthB SmallArchDepth df.mvs
+		define sg : UShapeGroup ada adb
 
-		define Config : object
-			"serifed"          { true   }
-			"serifless"        { false  }
-
-		foreach { suffix { fSlab } } [Object.entries Config] : do
+		foreach { suffix { Base Slabs } } [Object.entries : SmallUConfigT sg] : do
 			create-glyph "ue/u.\(suffix)" : glyph-proc
-				local df : include : DivFrame para.diversityM 3
+				include df
 				include : df.markSet.e
 				set-base-anchor 'cvDecompose' 0 0
-				include : ueUPart df fSlab
+				include : Base subDf XH df.mvs
+				include : Slabs subDf XH
+
+				eject-contour 'strokeR'
+				eject-contour 'serifRT'
+				eject-contour 'serifRB'
+
+			create-glyph "au/u.\(suffix)" : glyph-proc
+				set-width 0
+				set-mark-anchor 'cvDecompose' 0 0
+				include : difference
+					Base subDf XH df.mvs
+					intersection [MaskLeft subDf.middle] [MaskAbove (XH - adb)]
+				include : Slabs subDf XH
+				include : ApparentTranslate shift 0
+				eject-contour 'serifLT'
 
 	do "c subglyphs"
 		glyph-block-import Letter-Latin-C : CLetterForm CConfig
@@ -378,6 +382,7 @@ glyph-block Letter-Latin-Lower-AE-OE : begin
 	select-variant "ae/e" (follow -- 'e')
 	select-variant "aeInvE/right" (follow -- 'e')
 	select-variant "ue/u"
+	select-variant "au/u"
 	select-variant "oeOpenO/left" (follow -- 'c')
 	select-variant "cyrl/yae/left"
 	select-variant "cyrl/rha/left" (follow -- 'cyrl/er')
@@ -389,6 +394,7 @@ glyph-block Letter-Latin-Lower-AE-OE : begin
 	derive-composites 'oe' 0x153  'oe/o' 'ae/e'
 	derive-composites 'ue' 0x1D6B 'ue/u' 'ae/e'
 	derive-composites 'ao' 0xA735 'ae/a' 'ao/o'
+	derive-composites 'au' 0xA737 'ae/a' 'au/u'
 	derive-composites 'oo' 0xA74F 'oe/o' 'ao/o'
 	derive-composites 'uo' 0xAB63 'ue/u' 'ao/o'
 	derive-composites 'oeOpenO' 0xAB62 'oeOpenO/left' 'ae/e'
diff --git a/packages/font-glyphs/src/letter/latin-ext/upper-aa-ao.ptl b/packages/font-glyphs/src/letter/latin-ext/upper-aa-ao.ptl
index db54b1faa..30d6e811d 100644
--- a/packages/font-glyphs/src/letter/latin-ext/upper-aa-ao.ptl
+++ b/packages/font-glyphs/src/letter/latin-ext/upper-aa-ao.ptl
@@ -12,6 +12,7 @@ glyph-block Letter-Latin-Upper-AA-AO : begin
 
 	do "A glyphs"
 		glyph-block-import Letter-Latin-Upper-A : AConfig AMaskShape ALetterShape
+		glyph-block-import Letter-Latin-Upper-A : ABottomRightRemoved ABarPosition
 
 		define [AHalfShape pShift df top fStraightBar slabKind] : begin
 			local { subDf shift } : SubDfAndShift pShift df
@@ -63,6 +64,18 @@ glyph-block Letter-Latin-Upper-AA-AO : begin
 					set-mark-anchor 'cvDecompose' 0 0 0 0
 					include : AHalfShapeMask 1 df height fStraightBar skRight
 
+				create-glyph "\(prefix)/AU/Left.\(suffix)" : glyph-proc
+					define df : include : DivFrame para.diversityM 3.5
+					local { subDf shift } : SubDfAndShift 1 df
+					include : ABottomRightRemoved subDf fStraightBar slabKind CAP df.mvs
+				create-glyph "\(prefix)/AU/LeftMask.\(suffix)" : glyph-proc
+					define df : include : DivFrame para.diversityM 3.5
+					local { subDf shift } : SubDfAndShift 1 df
+					include : union
+						MaskAbove : [ABarPosition slabKind CAP] - df.mvs
+						MaskLeft  : subDf.width / 2
+					include : ABottomRightRemoved subDf fStraightBar slabKind CAP df.mvs
+
 			select-variant "\(prefix)/Left"      (follow -- 'A')
 			select-variant "\(prefix)/LeftMask"  (follow -- 'A')
 			select-variant "\(prefix)/Right"     (follow -- 'A')
@@ -94,6 +107,30 @@ glyph-block Letter-Latin-Upper-AA-AO : begin
 				include [refer-glyph left] AS_BASE ALSO_METRICS
 				include : difference [refer-glyph right] [refer-glyph leftMask]
 
+	do "U subglyphs"
+		glyph-block-import Letter-Latin-U : CapitalUConfig
+		foreach { suffix { Base {Slabs fLTSlab} } } [Object.entries CapitalUConfig] : do
+			create-glyph "AU/Right.\(suffix)" : glyph-proc
+				define df : DivFrame para.diversityM 3.5
+				local { subDf shift } : SubDfAndShift 1 df
+				include : with-transform [ApparentTranslate shift 0]
+					union [Base subDf CAP df.mvs] [Slabs subDf CAP]
+
+		select-variant "AU/Right" (follow -- 'U/noTopLeftSerif')
+
+	do "AU"
+		select-variant 'AA/AU/Left' (follow -- 'A')
+		select-variant 'AA/AU/LeftMask' (follow -- 'A')
+		derive-multi-part-glyphs 'AU' 0xA736 {'AA/AU/Left' 'AA/AU/LeftMask' 'AU/Right'}
+			function [srcs gr] : glyph-proc
+				define df : include : DivFrame para.diversityM 3.5
+				local { subDf shift } : SubDfAndShift 1 df
+				include : df.markSet.capital
+				define { left mask right } srcs
+				include [refer-glyph left]
+				include : difference [refer-glyph right]
+					intersection [refer-glyph mask] [MaskLeft (subDf.width / 2 + shift)]
+
 	do "RHA"
 		glyph-block-import Letter-Shared-Shapes : SerifFrame WithSerifOverflowMask
 		glyph-block-import Letter-Latin-Upper-P : PShape PConfig
diff --git a/packages/font-glyphs/src/letter/latin/u.ptl b/packages/font-glyphs/src/letter/latin/u.ptl
index ce18c5a58..86421f975 100644
--- a/packages/font-glyphs/src/letter/latin/u.ptl
+++ b/packages/font-glyphs/src/letter/latin/u.ptl
@@ -36,70 +36,67 @@ glyph-block Letter-Latin-U : begin
 			adb -- adb
 			offset -- offset
 
-	define [UToothed df top fHookLeft] : glyph-proc
-		set-base-anchor 'trailing' df.rightSB 0
-		include : nShoulder
-			top -- top
-			bottom -- [if fHookLeft (TailY + HalfStroke) 0]
-			left -- (df.leftSB + [HSwToV Stroke])
-			right -- df.rightSB
-			fine -- ShoulderFine
-		if fHookLeft : include : RetroflexHook.rExt df.rightSB (TailY + HalfStroke)
-		include : FlipAround df.middle (top / 2)
-		include : VBar.r df.rightSB 0 top
+	glyph-block-export UShapeGroup
+	define [UShapeGroup ada adb] : namespace
+		export : define [Toothed df top sw fHookLeft] : glyph-proc
+			set-base-anchor 'trailing' df.rightSB 0
+			include : nShoulder
+				top -- top
+				bottom -- [if fHookLeft (TailY + HalfStroke) 0]
+				left -- (df.leftSB + [HSwToV sw])
+				right -- df.rightSB
+				stroke -- sw
+				fine -- ShoulderFine
+				ada -- ada
+				adb -- adb
+			if fHookLeft : include : RetroflexHook.rExt df.rightSB (TailY + HalfStroke) (sw -- sw)
+			include : FlipAround df.middle (top / 2)
+			include : tagged 'strokeR' : VBar.r df.rightSB 0 top sw
 
-	define [UTailed df top fHookLeft] : glyph-proc
-		set-base-anchor 'trailing' (df.rightSB + SideJut) 0
-		include : nShoulder
-			top -- top
-			bottom -- [if fHookLeft (TailY + HalfStroke) 0]
-			left -- (df.leftSB + [HSwToV Stroke])
-			right -- df.rightSB
-			fine -- ShoulderFine
-		if fHookLeft : include : RetroflexHook.rExt df.rightSB (TailY + HalfStroke)
-		include : FlipAround df.middle (top / 2)
-		include : RightwardTailedBar df.rightSB 0 top
+		export : define [Tailed df top sw fHookLeft] : glyph-proc
+			set-base-anchor 'trailing' (df.rightSB + SideJut) 0
+			include : nShoulder
+				top -- top
+				bottom -- [if fHookLeft (TailY + HalfStroke) 0]
+				left -- (df.leftSB + [HSwToV sw])
+				right -- df.rightSB
+				stroke -- sw
+				fine -- ShoulderFine
+				ada -- ada
+				adb -- adb
+			if fHookLeft : include : RetroflexHook.rExt df.rightSB (TailY + HalfStroke) (sw -- sw)
+			include : FlipAround df.middle (top / 2)
+			include : tagged 'strokeR' : RightwardTailedBar df.rightSB 0 top (sw -- sw)
 
-	define [UToothlessRounded df top] : glyph-proc
-		include : UShape df top 0
+		export : define [ToothlessRounded df top sw fHookLeft] : glyph-proc
+			if fHookLeft : begin
+				include : dispiro
+					widths.rhs sw
+					flat df.leftSB 0 [heading Upward]
+					curl df.leftSB (top - ada)
+					arcvh
+					g4 (df.middle - CorrectionOMidS) (top - O)
+					archv
+					flat df.rightSB (top - adb)
+					curl df.rightSB (TailY + HalfStroke) [heading Downward]
+				include : RetroflexHook.rExt df.rightSB (TailY + HalfStroke) (sw -- sw)
+				include : FlipAround df.middle (top / 2)
+			: else : include : UShape df top 0 (stroke -- sw) (ada -- ada) (adb -- adb)
 
-	define [UToothlessRoundedSmall df top fHookLeft] : glyph-proc
-		if fHookLeft : begin
+		export : define [ToothlessCorner df top sw fHookLeft] : glyph-proc
+			include : VBar.l df.leftSB 0 (top - DToothlessRise) sw
 			include : dispiro
-				widths.rhs
-				flat df.leftSB 0 [heading Upward]
-				curl df.leftSB (top - SmallArchDepthA)
-				arcvh
+				widths.rhs sw
+				g4 df.leftSB (top - DToothlessRise)
 				g4 (df.middle - CorrectionOMidS) (top - O)
 				archv
-				flat df.rightSB (top - SmallArchDepthB)
-				curl df.rightSB (TailY + HalfStroke) [heading Downward]
-			include : RetroflexHook.rExt df.rightSB (TailY + HalfStroke)
+				flat df.rightSB (top - adb)
+				curl df.rightSB [if fHookLeft (TailY + HalfStroke) 0] [heading Downward]
+			if fHookLeft : include : RetroflexHook.rExt df.rightSB (TailY + HalfStroke) (sw -- sw)
 			include : FlipAround df.middle (top / 2)
-		: else : include : UShape df top 0 (ada -- SmallArchDepthA) (adb -- SmallArchDepthB)
 
-	define [UToothlessCorner df top] : glyph-proc
-		include : VBar.l df.leftSB 0 (top - DToothlessRise)
-		include : dispiro
-			widths.rhs
-			g4 df.leftSB (top - DToothlessRise)
-			g4 (df.middle - CorrectionOMidS) (top - O)
-			archv
-			flat df.rightSB (top - ArchDepthB)
-			curl df.rightSB 0 [heading Downward]
-		include : FlipAround df.middle (top / 2)
-
-	define [UToothlessCornerSmall df top fHookLeft] : glyph-proc
-		include : VBar.l df.leftSB 0 (top - DToothlessRise)
-		include : dispiro
-			widths.rhs
-			g4 df.leftSB (top - DToothlessRise)
-			g4 (df.middle - CorrectionOMidS) (top - O)
-			archv
-			flat df.rightSB (top - SmallArchDepthB)
-			curl df.rightSB [if fHookLeft (TailY + HalfStroke) 0] [heading Downward]
-		if fHookLeft : include : RetroflexHook.rExt df.rightSB (TailY + HalfStroke)
-		include : FlipAround df.middle (top / 2)
+	define UUpper : UShapeGroup ArchDepthA ArchDepthB
+	define ULower : UShapeGroup SmallArchDepthA SmallArchDepthB
 
 	define [UTopLeftSerif df yTop _sw]  : tagged 'serifLT'
 		HSerif.lt df.leftSB yTop SideJut _sw
@@ -149,12 +146,13 @@ glyph-block Letter-Latin-U : begin
 			local sf : SerifFrame.fromDf df top 0 (swSerif -- _sw)
 			return : composite-proc sf.lt.full sf.rt.full
 
+	glyph-block-export CapitalUConfig
 	define CapitalUConfig : SuffixCfg.weave
 		object # body
-			toothed           UToothed
-			tailed            UTailed
-			toothlessCorner   UToothlessCorner
-			toothlessRounded  UToothlessRounded
+			toothed           UUpper.Toothed
+			tailed            UUpper.Tailed
+			toothlessCorner   UUpper.ToothlessCorner
+			toothlessRounded  UUpper.ToothlessRounded
 		function [body] : object # serifs
 			serifless               { no-shape                false }
 			bottomRightSerifed      { USerifs.BottomRight     false }
@@ -171,7 +169,7 @@ glyph-block Letter-Latin-U : begin
 		create-glyph "U.\(suffix)" : glyph-proc
 			local df : DivFrame 1
 			include : MarkSet.capital
-			include : Base df CAP
+			include : Base df CAP Stroke
 			include : Slabs df CAP
 
 		create-glyph "U/withTonos.\(suffix)" : glyph-proc
@@ -181,16 +179,17 @@ glyph-block Letter-Latin-U : begin
 		create-glyph "smcpU.\(suffix)" : glyph-proc
 			local df : DivFrame 1
 			include : MarkSet.e
-			include : Base df XH
+			include : Base df XH Stroke
 			include : Slabs df XH
 
-	define SmallUConfig : SuffixCfg.weave
+	glyph-block-export SmallUConfigT
+	define [SmallUConfigT shapeGroup] : SuffixCfg.weave
 		object # body
-			toothed           UToothed
-			tailed            UTailed
-			toothlessCorner   UToothlessCornerSmall
-			toothlessRounded  UToothlessRoundedSmall
-			urtBase           UToothed
+			toothed           shapeGroup.Toothed
+			tailed            shapeGroup.Tailed
+			toothlessCorner   shapeGroup.ToothlessCorner
+			toothlessRounded  shapeGroup.ToothlessRounded
+			urtBase           shapeGroup.Toothed
 		function [body] : object # serifs
 			serifless              no-shape
 			bottomRightSerifed     USerifs.BottomRight
@@ -203,17 +202,17 @@ glyph-block Letter-Latin-U : begin
 				[Just 'urtBase']   USerifs.RTBase
 				__                 USerifs.SmallToothless
 
-	foreach { suffix { Base Slabs } } [Object.entries SmallUConfig] : do
+	foreach { suffix { Base Slabs } } [Object.entries : SmallUConfigT ULower] : do
 		create-glyph "u.\(suffix)" : glyph-proc
 			local df : DivFrame 1
 			include : MarkSet.e
-			include : Base df XH
+			include : Base df XH Stroke
 			include : Slabs df XH
 
 		create-glyph "grek/mu.\(suffix)" : glyph-proc
 			local df : DivFrame 1
 			include : MarkSet.p
-			include : Base df XH
+			include : Base df XH Stroke
 			include : dispiro
 				widths.rhs
 				flat SB Descender [heading Upward]
@@ -224,7 +223,7 @@ glyph-block Letter-Latin-U : begin
 		create-glyph "uHookLeft.\(suffix)" : glyph-proc
 			local df : DivFrame 1
 			include : MarkSet.e
-			include : Base df XH true
+			include : Base df XH Stroke true
 			include : Slabs df XH
 			eject-contour 'serifLT'
 
@@ -232,7 +231,7 @@ glyph-block Letter-Latin-U : begin
 			local df : DivFrame (XH / Width) 2 (XH * 0.1 / SB)
 			include : df.markSet.e
 			include : PointingTo Width XH Width 0 : function [] : glyph-proc
-				include : Base  df (Width - SB)
+				include : Base  df (Width - SB) Stroke
 				include : Slabs df (Width - SB)
 				include : Translate 0 (SB / 2)
 
@@ -242,7 +241,7 @@ glyph-block Letter-Latin-U : begin
 			local ww : Width * para.diversityM
 			set-width ww
 			include : PointingTo ww XH ww 0 : function [] : glyph-proc
-				include : Base  df (ww - SB - 0.75 * para.diversityM * AccentHeight)
+				include : Base  df (ww - SB - 0.75 * para.diversityM * AccentHeight) Stroke
 				include : Slabs df (ww - SB - 0.75 * para.diversityM * AccentHeight)
 				include : Translate 0 (SB / 2)
 
diff --git a/packages/font-glyphs/src/letter/latin/upper-a.ptl b/packages/font-glyphs/src/letter/latin/upper-a.ptl
index c2c0b6c13..60769998a 100644
--- a/packages/font-glyphs/src/letter/latin/upper-a.ptl
+++ b/packages/font-glyphs/src/letter/latin/upper-a.ptl
@@ -3,6 +3,7 @@ $$include '../../meta/macros.ptl'
 import [mix fallback SuffixCfg] from "@iosevka/util"
 import [MathSansSerif] from "@iosevka/glyph/relation"
 import [maskBits bitOr] from "@iosevka/util/mask-bit"
+import [Seg] from "@iosevka/geometry/segment"
 
 glyph-module
 
@@ -12,7 +13,7 @@ glyph-block Letter-Latin-Upper-A : begin
 	glyph-block-import Mark-Shared-Metrics : markHalfStroke
 	glyph-block-import Letter-Shared : SetGrekUpperTonos CreateOgonekComposition
 	glyph-block-import Letter-Shared-Shapes : SerifFrame
-	glyph-block-import Letter-Latin-V : VShapeOutline VShape
+	glyph-block-import Letter-Latin-V : VShapeOutline VShape VCornerHalfWidth
 
 	define SLAB-NONE    0
 	define SLAB-TOP     1
@@ -24,7 +25,10 @@ glyph-block Letter-Latin-Upper-A : begin
 		include : VShapeOutline df fBarStraight top sw
 		include : FlipAround (df.width / 2) (top / 2)
 
-	define [ABarPosition fBaseSlabs top] : mix [if fBaseSlabs Stroke 0] top (XH / 2 / CAP)
+	glyph-block-export ABarPosition
+	define [ABarPosition slabKind top] : begin
+		local fBaseSlabs : maskBits slabKind : bitOr SLAB-LEFT SLAB-RIGHT
+		return : mix [if fBaseSlabs Stroke 0] top (XH / 2 / CAP)
 
 	glyph-block-export AConfig
 	define AConfig : SuffixCfg.weave
@@ -45,15 +49,51 @@ glyph-block Letter-Latin-Upper-A : begin
 		if [maskBits slabKind SLAB-TOP] : include : intersection [MaskLeft df.middle]
 			if [maskBits slabKind : bitOr SLAB-LEFT SLAB-RIGHT]
 			: then : HSerif.lt df.middle top (MidJutSide + [HSwToV : 0.25 * sw]) sf.swSerif
-			: else : HSerif.lt df.middle top [mix MidJutSide LongJut 0.5]          sf.swSerif
+			: else : HSerif.lt df.middle top [mix MidJutSide LongJut 0.5]        sf.swSerif
+
+	glyph-block-export ABottomRightRemoved
+	define [ABottomRightRemoved] : with-params [df fStraightBar slabKind top sw] : new-glyph : glyph-proc
+		define yBar : ABarPosition slabKind top
+		include : VShape df fStraightBar top sw
+		include : FlipAround df.middle (top / 2)
+		eject-contour 'strokeDown'
+
+		local rightStrokeKnots : begin
+			local s : Seg (df.middle + VCornerHalfWidth * sw / Stroke) top df.rightSB (yBar - sw)
+			list
+				s.z 0 flat
+				s.zz 0.55 [StrokeWidthBlend 0.48 0.45] [if fStraightBar curl g4]
+				s.z 1 straight.down.end
+
+		include : intersection
+			MaskAbove (yBar - sw)
+			dispiro [widths.rhs sw] rightStrokeKnots
+
+		include : tagged 'crossBar'
+			intersection
+				HBar.t 0 df.width yBar sw
+				union
+					AMaskShape df fStraightBar top sw
+					intersection
+						MaskRight df.middle
+						MaskAbove (yBar - sw)
+						spiro-outline rightStrokeKnots
+							corner df.rightSB 0
+							corner 0 0
+							corner 0 top
+
+		include : ASerifs df top sw slabKind
+		eject-contour 'serifRB'
+
+		return : yBar - sw
 
 	glyph-block-export ALetterShape
 	define [ALetterShape] : with-params [df fStraightBar slabKind top sw] : new-glyph : glyph-proc
 		include : VShape df fStraightBar top sw
 		include : FlipAround df.middle (top / 2)
-		define yBar : ABarPosition [maskBits slabKind : bitOr SLAB-LEFT SLAB-RIGHT] top
+		define yBar : ABarPosition slabKind top
 		include : tagged 'crossBar'
-			intersection [HBar.t 0 df.width yBar] [AMaskShape df fStraightBar top sw]
+			intersection [HBar.t 0 df.width yBar sw] [AMaskShape df fStraightBar top sw]
 		include : ASerifs df top sw slabKind
 
 	glyph-block-export LambdaShape
@@ -78,7 +118,7 @@ glyph-block Letter-Latin-Upper-A : begin
 				slabKind -- slabKind
 
 			if fOverlays : begin
-				define yBar : ABarPosition [maskBits slabKind : bitOr SLAB-LEFT SLAB-RIGHT] top
+				define yBar : ABarPosition slabKind top
 				eject-contour 'crossBar'
 				include : HOverlayBar [mix 0 SB 0.5] [mix Width RightSB 0.5] (yBar - HalfStroke + 0.5 * OverlayStroke)
 				include : HOverlayBar [mix 0 SB 0.5] [mix Width RightSB 0.5] [mix yBar top 0.25]
diff --git a/packages/font-glyphs/src/letter/latin/v.ptl b/packages/font-glyphs/src/letter/latin/v.ptl
index 64716d846..153950094 100644
--- a/packages/font-glyphs/src/letter/latin/v.ptl
+++ b/packages/font-glyphs/src/letter/latin/v.ptl
@@ -12,6 +12,7 @@ glyph-block Letter-Latin-V : begin
 	glyph-block-import Letter-Shared-Shapes : DiagTail SerifFrame PalatalHook
 	glyph-block-import Letter-Blackboard : BBS BBD
 
+	glyph-block-export VCornerHalfWidth
 	define VCornerHalfWidth : HSwToV : 1.15 * HalfStroke
 	define VCurviness   0.3
 	define VShapeFine : Math.max
diff --git a/packages/font-glyphs/src/marks/below.ptl b/packages/font-glyphs/src/marks/below.ptl
index 8e8cc66dd..2f7985264 100644
--- a/packages/font-glyphs/src/marks/below.ptl
+++ b/packages/font-glyphs/src/marks/below.ptl
@@ -3,7 +3,6 @@ $$include '../meta/macros.ptl'
 import [Arcs Quadify ShapeConv] from "typo-geom"
 import [mix linreg clamp fallback] from "@iosevka/util"
 import [ScheduleLeaningMark] from "@iosevka/glyph/relation"
-import [Box] from "@iosevka/geometry/box"
 
 glyph-module
 
diff --git a/packages/font-glyphs/src/marks/shared-metrics.ptl b/packages/font-glyphs/src/marks/shared-metrics.ptl
index 5eda903a5..22b0b7b24 100644
--- a/packages/font-glyphs/src/marks/shared-metrics.ptl
+++ b/packages/font-glyphs/src/marks/shared-metrics.ptl
@@ -3,7 +3,6 @@ $$include '../meta/macros.ptl'
 import [Arcs Quadify ShapeConv] from "typo-geom"
 import [mix linreg clamp fallback] from "@iosevka/util"
 import [DesignParameters] from "../meta/aesthetics.mjs"
-import [Box] from "@iosevka/geometry/box"
 
 glyph-module
 
diff --git a/packages/geometry/package.json b/packages/geometry/package.json
index 7076a8d03..4b62a7635 100644
--- a/packages/geometry/package.json
+++ b/packages/geometry/package.json
@@ -1,19 +1,20 @@
 {
-  "name": "@iosevka/geometry",
-  "version": "28.0.2",
-  "private": true,
-  "exports": {
-    ".": "./src/index.mjs",
-    "./anchor": "./src/anchor.mjs",
-    "./box": "./src/box.mjs",
-    "./curve-util": "./src/curve-util.mjs",
-    "./point": "./src/point.mjs",
-    "./transform": "./src/transform.mjs",
-    "./spiro-control": "./src/spiro-control.mjs"
-  },
-  "dependencies": {
-    "@iosevka/util": "28.0.2",
-    "spiro": "^3.0.0",
-    "typo-geom": "^0.13.1"
-  }
+	"name": "@iosevka/geometry",
+	"version": "28.0.2",
+	"private": true,
+	"exports": {
+		".": "./src/index.mjs",
+		"./anchor": "./src/anchor.mjs",
+		"./box": "./src/box.mjs",
+		"./segment": "./src/segment.mjs",
+		"./curve-util": "./src/curve-util.mjs",
+		"./point": "./src/point.mjs",
+		"./transform": "./src/transform.mjs",
+		"./spiro-control": "./src/spiro-control.mjs"
+	},
+	"dependencies": {
+		"@iosevka/util": "28.0.2",
+		"spiro": "^3.0.0",
+		"typo-geom": "^0.13.1"
+	}
 }
diff --git a/packages/geometry/src/segment.mjs b/packages/geometry/src/segment.mjs
new file mode 100644
index 000000000..f889817e2
--- /dev/null
+++ b/packages/geometry/src/segment.mjs
@@ -0,0 +1,28 @@
+import { mix } from "@iosevka/util";
+
+export class CSegment {
+	constructor(x1, y1, x2, y2) {
+		this.x0 = x1;
+		this.y0 = y1;
+		this.x1 = x2;
+		this.y1 = y2;
+	}
+
+	x(t) {
+		return mix(this.x0, this.x1, t);
+	}
+	y(t) {
+		return mix(this.y0, this.y1, t);
+	}
+
+	z(t, fn, ...additionalArgs) {
+		return fn(this.x(t), this.y(t), ...additionalArgs);
+	}
+	zz(tx, ty, fn, ...additionalArgs) {
+		return fn(this.x(tx), this.y(ty), ...additionalArgs);
+	}
+}
+
+export function Seg(x0, y0, x1, y1) {
+	return new CSegment(x0, y0, x1, y1);
+}
diff --git a/params/variants.toml b/params/variants.toml
index 0029daa97..a2e1726ee 100644
--- a/params/variants.toml
+++ b/params/variants.toml
@@ -1076,24 +1076,28 @@ next = "serifs"
 rank = 1
 descriptionAffix = "toothed shape"
 selectorAffix.U = "toothed"
+selectorAffix."U/noTopLeftSerif" = "toothed"
 selectorAffix."U/sansSerif" = "toothed"
 
 [prime.capital-u.variants-buildup.stages.body.tailed]
 rank = 2
 descriptionAffix = "tailed shape"
 selectorAffix.U = "tailed"
+selectorAffix."U/noTopLeftSerif" = "tailed"
 selectorAffix."U/sansSerif" = "tailed"
 
 [prime.capital-u.variants-buildup.stages.body.toothless-corner]
 rank = 3
 descriptionAffix = "toothless (corner bottom-right) shape"
 selectorAffix.U = "toothlessCorner"
+selectorAffix."U/noTopLeftSerif" = "toothlessCorner"
 selectorAffix."U/sansSerif" = "toothlessCorner"
 
 [prime.capital-u.variants-buildup.stages.body.toothless-rounded]
 rank = 4
 descriptionAffix = "toothless (rounded) shape"
 selectorAffix.U = "toothlessRounded"
+selectorAffix."U/noTopLeftSerif" = "toothlessRounded"
 selectorAffix."U/sansSerif" = "toothlessRounded"
 
 [prime.capital-u.variants-buildup.stages.serifs.serifless]
@@ -1101,6 +1105,7 @@ rank = 1
 descriptionAffix = "serifs"
 descriptionJoiner = "without"
 selectorAffix.U = "serifless"
+selectorAffix."U/noTopLeftSerif" = "serifless"
 selectorAffix."U/sansSerif" = "serifless"
 
 [prime.capital-u.variants-buildup.stages.serifs.motion-serifed]
@@ -1108,6 +1113,7 @@ rank = 2
 disableIf = [{ body = "toothless-corner" }, { body = "toothless-rounded" }]
 descriptionAffix = "motion serifs at top-left and bottom-right"
 selectorAffix.U = "unilateralMotionSerifed"
+selectorAffix."U/noTopLeftSerif" = "serifless"
 selectorAffix."U/sansSerif" = "serifless"
 
 [prime.capital-u.variants-buildup.stages.serifs.bottom-right-serifed]
@@ -1115,6 +1121,7 @@ rank = 3
 disableIf = [{ body = "NOT toothed" }]
 descriptionAffix = "serif at bottom-right"
 selectorAffix.U = "bottomRightSerifed"
+selectorAffix."U/noTopLeftSerif" = "bottomRightSerifed"
 selectorAffix."U/sansSerif" = "serifless"
 
 [prime.capital-u.variants-buildup.stages.serifs.unilateral-motion-serifed]
@@ -1122,6 +1129,7 @@ rank = 4
 disableIf = [{ body = "toothed" }, { body = "tailed" }]
 descriptionAffix = "motion serifs at left side"
 selectorAffix.U = "unilateralMotionSerifed"
+selectorAffix."U/noTopLeftSerif" = "serifless"
 selectorAffix."U/sansSerif" = "serifless"
 
 [prime.capital-u.variants-buildup.stages.serifs.bilateral-motion-serifed]
@@ -1129,12 +1137,14 @@ rank = 5
 disableIf = [{ body = "toothed" }, { body = "tailed" }]
 descriptionAffix = "motion serifs at both sides"
 selectorAffix.U = "bilateralMotionSerifed"
+selectorAffix."U/noTopLeftSerif" = "bilateralMotionSerifed"
 selectorAffix."U/sansSerif" = "serifless"
 
 [prime.capital-u.variants-buildup.stages.serifs.serifed]
 rank = 6
 descriptionAffix = "serifs"
 selectorAffix.U = "serifed"
+selectorAffix."U/noTopLeftSerif" = "serifed"
 selectorAffix."U/sansSerif" = "serifless"
 
 
@@ -3722,7 +3732,8 @@ selectorAffix."cyrl/shcha.italic" = "toothed"
 selectorAffix."cyrl/shcha/reduced.italic" = "toothed"
 selectorAffix."cyrl/dzhe.italic" = "toothed"
 selectorAffix."cyrl/tse.italic" = "toothed"
-selectorAffix."ue/u" = ""
+selectorAffix."ue/u" = "toothed"
+selectorAffix."au/u" = "toothed"
 
 [prime.u.variants-buildup.stages.body.tailed]
 rank = 2
@@ -3746,7 +3757,8 @@ selectorAffix."cyrl/shcha.italic" = "toothed"
 selectorAffix."cyrl/shcha/reduced.italic" = "toothed"
 selectorAffix."cyrl/dzhe.italic" = "tailed"
 selectorAffix."cyrl/tse.italic" = "toothed"
-selectorAffix."ue/u" = ""
+selectorAffix."ue/u" = "toothed"
+selectorAffix."au/u" = "tailed"
 
 [prime.u.variants-buildup.stages.body.toothless-corner]
 rank = 3
@@ -3770,7 +3782,8 @@ selectorAffix."cyrl/shcha.italic" = "toothed"
 selectorAffix."cyrl/shcha/reduced.italic" = "toothed"
 selectorAffix."cyrl/dzhe.italic" = "toothed"
 selectorAffix."cyrl/tse.italic" = "toothed"
-selectorAffix."ue/u" = ""
+selectorAffix."ue/u" = "toothed"
+selectorAffix."au/u" = "toothlessCorner"
 
 [prime.u.variants-buildup.stages.body.toothless-rounded]
 rank = 4
@@ -3794,7 +3807,8 @@ selectorAffix."cyrl/shcha.italic" = "toothed"
 selectorAffix."cyrl/shcha/reduced.italic" = "toothed"
 selectorAffix."cyrl/dzhe.italic" = "toothed"
 selectorAffix."cyrl/tse.italic" = "toothed"
-selectorAffix."ue/u" = ""
+selectorAffix."ue/u" = "toothed"
+selectorAffix."au/u" = "toothlessRounded"
 
 [prime.u.variants-buildup.stages.serifs.serifless]
 rank = 1
@@ -3820,6 +3834,7 @@ selectorAffix."cyrl/shcha/reduced.italic" = "serifless"
 selectorAffix."cyrl/dzhe.italic" = "serifless"
 selectorAffix."cyrl/tse.italic" = "serifless"
 selectorAffix."ue/u" = "serifless"
+selectorAffix."au/u" = "serifless"
 
 [prime.u.variants-buildup.stages.serifs.motion-serifed]
 rank = 2
@@ -3844,6 +3859,7 @@ selectorAffix."cyrl/shcha/reduced.italic" = "motionSerifed"
 selectorAffix."cyrl/dzhe.italic" = "motionSerifed"
 selectorAffix."cyrl/tse.italic" = "motionSerifed"
 selectorAffix."ue/u" = "serifed"
+selectorAffix."au/u" = {if = [{body = "toothed"}], then = "bottomRightSerifed", else = "serifless"}
 
 [prime.u.variants-buildup.stages.serifs.bottom-right-serifed]
 rank = 3
@@ -3869,6 +3885,7 @@ selectorAffix."cyrl/shcha/reduced.italic" = "serifless"
 selectorAffix."cyrl/dzhe.italic" = "bottomRightSerifed"
 selectorAffix."cyrl/tse.italic" = "serifless"
 selectorAffix."ue/u" = "serifless"
+selectorAffix."au/u" = {if = [{body = "toothed"}], then = "bottomRightSerifed", else = "serifless"}
 
 [prime.u.variants-buildup.stages.serifs.serifed]
 rank = 4
@@ -3893,6 +3910,7 @@ selectorAffix."cyrl/shcha/reduced.italic" = "motionSerifed"
 selectorAffix."cyrl/dzhe.italic" = "serifed"
 selectorAffix."cyrl/tse.italic" = "serifed"
 selectorAffix."ue/u" = "serifed"
+selectorAffix."au/u" = "serifed"