diff --git a/config/splat.md_SC03_135.yaml b/config/splat.md_SC03_135.yaml
index a87880747..fa690288a 100644
--- a/config/splat.md_SC03_135.yaml
+++ b/config/splat.md_SC03_135.yaml
@@ -94,7 +94,9 @@ segments:
       # 0x801E25E8 ahead of the code, a 1-word analogue of main's rodata-island (no ld_interleave).
       # - [0x0, rodata, head]
       - [0x0, .rodata, md_SC03_135]      # module-id header (+jtbl/ptr table) — §154-A
-      - [0x27C, c, md_SC03_135]
+      - [0x268, .rodata, md_SC03_135_jr_801E5358]   # §154-A island split (jtbl_carve --island-split)
+      - [0x27c, c, md_SC03_135]
+      - [0x2d70, c, md_SC03_135_jr_801E5358]
       - [0x3594, data, tail] # data tail: pointer tables + packed data (split iterated)
   - [0x880C]   # EOF marker = the 0.4.dec byte length
 # @TRAILING@ (above) is replaced by tools/new_overlay.sh: for a non-4-aligned overlay it becomes
diff --git a/src/md_SC03_135/md_SC03_135.c b/src/md_SC03_135/md_SC03_135.c
index b13119ae9..8fdcd6a61 100644
--- a/src/md_SC03_135/md_SC03_135.c
+++ b/src/md_SC03_135/md_SC03_135.c
@@ -751,215 +751,3 @@ void func_801E5324(void) {
     extern u8 D_800AF040[];
     func_8001ABBC(0, 0, D_800AF040, 0, 0);
 }
-
-
-INCLUDE_ASM("asm/md_SC03_135/nonmatchings/md_SC03_135", func_801E5358);
-
-
-
-void func_801E54A4(void *a0) {
-
-    extern void (*D_801E67E0[])(void);
-    D_801E67E0[*(u16 *)((s32)a0 + 0x2)]();
-}
-
-
-INCLUDE_ASM("asm/md_SC03_135/nonmatchings/md_SC03_135", func_801E54E0);
-
-
-
-void func_801E54F0(void) {
-
-    extern s32 D_801EAC6C;
-    D_801EAC6C = 1;
-}
-
-
-
-
-s32 func_801E5504(void) {
-
-    extern s32 D_801EAC6C;
-    return D_801EAC6C;
-}
-
-
-INCLUDE_ASM("asm/md_SC03_135/nonmatchings/md_SC03_135", func_801E5514);
-
-INCLUDE_ASM("asm/md_SC03_135/nonmatchings/md_SC03_135", func_801E559C);
-
-INCLUDE_ASM("asm/md_SC03_135/nonmatchings/md_SC03_135", func_801E5624);
-
-INCLUDE_ASM("asm/md_SC03_135/nonmatchings/md_SC03_135", func_801E56A8);
-
-
-extern void func_8012C1B8(void);
-extern void func_8012CAE4(void *a0);
-extern void func_8001C214(s32 a0, s32 a1);
-extern void func_8012A828(s32 a0, s32 a1);
-extern void func_8012E8E0(s32 a0, s32 a1);
-extern s32 func_80178B18(s32 a0, s32 a1);
-
-void func_801E57C4(void *a0) {
-    extern s32 D_801CEA24;
-    extern s32 D_801BEAF8;
-    extern s32 D_801E669C;
-    extern s32 D_801E66CC;
-    s32 v0;
-    s32 ptr;
-
-    v0 = ((s32 (*)(void))func_8012C1B8)();
-    *(s32 *)((s32)a0 + 0x20) = v0;
-    if (v0 == 0) {
-        func_8012CAE4(a0);
-    } else {
-        func_8001C214(v0, (s32)&D_801CEA24);
-        ptr = *(s32 *)((s32)a0 + 0x68);
-        *(s16 *)(ptr + 0xC) = 0x7FFF;
-        *(s16 *)((s32)a0 + 0x2) = 1;
-        func_8012A828((s32)a0, (s32)&D_801BEAF8);
-        func_8012E8E0((s32)a0, (s32)&D_801E669C);
-        *(s16 *)((s32)a0 + 0x34) = 0;
-        func_80178B18((s32)a0, (s32)&D_801E66CC);
-    }
-}
-
-
-void *func_801E585C(void) {
-    typedef struct { s32 x, y, z; } SV4;
-    extern u8 D_80078EB1;
-    extern u8 D_80078E78[];
-    extern u32 D_801E6C68;
-    extern u32 D_801E6D8C;
-    extern s32 D_801EADF0;
-    extern void func_801E5A7C(void);
-    extern s32 func_80029504(void);
-    extern s32 func_801E5A1C(s32, s32, s32);
-    extern void func_801E5A34(s32, s32, s32);
-    extern void func_80029124(s32 a0, s32 a1);
-    extern void func_801E5AAC(void);
-    extern void func_801E5AFC(void);
-    extern void func_801E5B3C(void);
-    extern SV4 D_801EAC70;
-    s32 v;
-    u8 *p;
-
-    p = D_80078E78;
-    func_801E5A7C();
-    v = func_80029504();
-
-    if (v >= 0xC8) {
-        if (v < 0x258) {
-            if (func_801E5A1C(D_80078EB1, 0xD, 0x18)) {
-                if ((u32)(v - 0x136) < 0x46) {
-                    func_801E5A34(0xA, (s32)&D_801E6C68, (s32)func_801E5AFC);
-                    func_80029124(0x112, 1);
-                } else {
-                    func_801E5A34(0xA, 0, 0);
-                }
-            } else {
-                func_801E5A34(0xA, 0, 0);
-            }
-            if (func_801E5A1C(p[0x39], 0xD, 0x18)) {
-                if ((u32)(v - 0x136) < 0x46) {
-                    func_801E5A34(0xB, (s32)&D_801E6D8C, (s32)func_801E5B3C);
-                } else {
-                    func_801E5A34(0xB, 0, 0);
-                }
-            } else {
-                func_801E5A34(0xB, 0, 0);
-            }
-        } else {
-            func_801E5A34(0xA, 0, 0);
-            func_801E5A34(0xB, 0, 0);
-        }
-    } else {
-        func_801E5A34(0xA, 0, 0);
-        func_801E5A34(0xB, 0, 0);
-    }
-    func_801E5AAC();
-    if (D_801EADF0 == 0) {
-        return 0;
-    }
-    return &D_801EAC70;
-}
-
-
-s32 func_801E5998(s32 a0) {
-    extern s32 D_801EADF0;
-    extern s32 D_801EAC78;
-    extern s32 D_801EAC74;
-    s32 s0;
-    s32 v0;
-    s32 v1;
-    s32 limit;
-    func_801E585C();
-    s0 = a0;
-    v0 = D_801EADF0;
-    if (v0 > 0) {
-        v1 = 0;
-        limit = v0 * 16;
-        do {
-            if (*(s32 *)((s32)&D_801EAC78 + v1) == s0) {
-                return *(s32 *)((s32)&D_801EAC74 + v1);
-            }
-            v1 += 16;
-        } while (v1 < limit);
-    }
-    return 0;
-}
-
-
-s32 func_801E5A1C(s32 a0, s32 a1, s32 a2) {
-    return (a0 >= a1) && (a0 < a2);
-}
-
-
-void func_801E5A34(s32 a0, s32 a1, s32 a2) {
-    extern s32 D_801EADF0;
-    extern s32 D_801EAC74[][4];
-    extern s32 D_801EAC78[][4];
-    extern s32 D_801EAC7C[][4];
-    s32 n = D_801EADF0;
-    D_801EAC78[n][0] = a0;
-    D_801EAC74[n][0] = a1;
-    D_801EAC7C[n][0] = a2;
-    D_801EADF0 = n + 1;
-}
-
-
-extern s32 D_801EAC70;
-extern s32 D_801EADF0;
-extern void func_80016714(void *a0, s32 a1);
-
-void func_801E5A7C(void) {
-    func_80016714(&D_801EAC70, 0x180);
-    D_801EADF0 = 0;
-}
-
-
-INCLUDE_ASM("asm/md_SC03_135/nonmatchings/md_SC03_135", func_801E5AAC);
-
-extern s32 func_80029504(void);
-extern void func_80029124(s32 a0, s32 a1);
-extern void func_80029514(s32 arg0);
-
-void func_801E5AFC(void) {
-    func_80029124(0xFD, 0x1);
-    if (((s32 (*)(void))func_80029504)() == 0x136) {
-        ((void (*)(s32))func_80029514)(0x140);
-    }
-}
-
-
-extern s32 func_80029504(void);
-extern void func_80029124(s32 a0, s32 a1);
-extern void func_80029514(s32 arg0);
-
-void func_801E5B3C(void) {
-    func_80029124(0xFE, 0x1);
-    if (((s32 (*)(void))func_80029504)() == 0x136) {
-        ((void (*)(s32))func_80029514)(0x140);
-    }
-}
-
diff --git a/src/md_SC03_135/md_SC03_135_jr_801E5358.c b/src/md_SC03_135/md_SC03_135_jr_801E5358.c
new file mode 100644
index 000000000..9ba87c4ab
--- /dev/null
+++ b/src/md_SC03_135/md_SC03_135_jr_801E5358.c
@@ -0,0 +1,361 @@
+#include "common.h"
+
+/* ==== Phase-26 §8b carried decl layer (jr_isolate_all.py) ===================
+ * The file-scope decl environment from earlier code regions of this object —
+ * file-local types, col-0 decls, DEFINE_func macro externs, and each earlier
+ * definition's implied prototype (types first, then decls in original order).
+ * Decls emit no code => byte-neutral. See cookbook §8c. */
+typedef struct { s16 m[3][3]; s32 t[3]; } MTX_C974_801E3540;
+typedef struct { u32 w[38]; } Blk152_8017DF40_801E48B8;
+typedef struct { u8 b[4]; } Blk4_8017DF40_801E48B8;
+typedef struct { u8 c[8]; } Blk8;
+typedef struct { short m[3][3]; long t[3]; } MATRIX_801EDED4_801E5124;
+typedef struct { short vx, vy, vz, pad; } SVECTOR_801EDED4_801E5124;
+extern s32 func_801E288C(void);
+extern s32 func_80029504(void);
+extern void func_801E2980(s32 arg0, s32 arg1);
+extern void func_801E28D0(void);
+extern void func_801E295C(void);
+extern s16 func_801E2970(void);
+extern u16 D_80115116;
+extern unsigned short D_80115112;
+extern void (*D_801E65D0[])(void);
+extern void func_80141C04(void);
+extern void func_801E29F8(void);
+extern void func_801E2BC4(void);
+extern void func_801E2BE0(void);
+extern void func_801E2CC0(void);
+extern void func_800D2624(void);
+extern void func_801E2CDC(void);
+extern s32 func_80024054(u8 *, u8 *);
+extern s32 func_800D2650(s32, u8 *, s16, s16, s32, s32);
+extern s32 func_800D27DC(s32, s32, void *, s16, s32);
+extern s32 func_800D29F8(s32, s32, void *, s16, s32);
+extern s32 func_801E3830(s32, s16, s16, s16, s32 *);
+extern s32 func_801E3540(s32 ot, u8 *s, s16 c);
+extern u32 func_801E45C0(s32 a0, s32 a1);
+extern void func_801E4890(void);
+extern void func_801E48B8(s32 arg0);
+extern void func_8014B00C(void);
+extern void func_80029344(void);
+extern void func_801E4BA4(void);
+extern u8 *D_80126B10;
+extern u8 D_801E6644[];
+extern void func_80175414(s32 _arg0);
+void func_800167B8(int);
+extern int func_801E4BCC(u8 *arg);
+extern s32 func_800167F0(s32 a0);
+extern s32 func_801E4C24(void);
+extern s32 func_800D1E28(void);
+extern s32 func_8002D4C8(s32, s32);
+extern s32 func_8001BFD0(void);
+extern s32 func_800291B4(s32);
+extern s32 func_80029524(void);
+extern s32 func_800D0C48(s32);
+extern s32 func_801E4C9C(s32 param_1);
+extern void func_800D1EBC(void);
+extern void func_801E4D3C(void);
+extern void func_801E4D5C(void *a0);
+extern s32 func_801E4D98(void *a0);
+extern void func_801E4E04(void *a0);
+extern void func_80171A1C(void*);
+extern void func_801E4E40(void);
+extern s32 func_80171D78(u32, void *);
+extern void func_801E4E68(u32 arg0);
+extern s32 func_80014C54(s32, s32, s32);
+extern void func_800D1724(void *);
+extern void func_80171A1C(void *);
+extern void func_801E4ED0(void *arg0);
+extern void func_801E4F28(void);
+extern void func_801E4F30(void *a0);
+extern void func_801E4F6C(void);
+extern void func_801E4F8C(u32 arg0);
+extern void func_801E4FF4(void);
+extern void func_8012A018(s32 a0, s32 a1);
+extern void func_8012A094(s32 a0);
+extern void func_801E50C0(void *a0);
+extern void func_801E4FFC(void);
+extern void func_801E5124(s32 param_1, s16 *param_2);
+extern void func_801E50FC(s32 param_1);
+extern u16  func_80148800(s32 *a0);
+extern s32  func_80012C6C(s32 a0, s32 a1, s32 a2);
+extern s32  func_80012ABC(s32 a0, s32 a1, s32 a2);
+extern void func_80049CAC(s32 a0, s32 a1);
+extern void func_8012F14C(s32 a0, s32 a1, s32 a2);
+extern s32 func_801E531C(void);
+extern void func_8001ABBC(u32, u32, void *, u32, u32);
+extern void func_801E5324(void);
+/* ==== end §8b carried decl layer ==== */
+
+
+
+
+
+
+
+extern u8 *D_80126B10;
+extern u8 D_801E672C[];
+extern u8 D_801E6798[];
+extern u8 D_801E67B0[];
+extern s32 func_801789AC(u8 *a0);
+extern void func_80178CBC(u8 *a0, u8 *a1);
+extern s16 func_80185B78(void);
+extern void func_80185B88(s32 a0);
+extern void func_80174438(s32 a0);
+extern void func_801E2864(void);
+extern s32 func_801E288C(void);
+
+void func_801E5358(u8 *a0) {
+    switch (*(u16 *)(a0 + 0x34)) {
+    case 0:
+        switch (func_801789AC(a0)) {
+        case 2:
+            func_80178CBC(a0, D_801E6798);
+            *(u16 *)(a0 + 0x34) = 0;
+            break;
+        case 1:
+            *(u16 *)(a0 + 0x34) = 2;
+            func_80185B88(4);
+            break;
+        case 3:
+            func_80178CBC(a0, D_801E67B0);
+            *(u16 *)(a0 + 0x34) = 3;
+            break;
+        }
+        break;
+    case 1:
+        break;
+    case 2:
+        if (func_80185B78() != 0) {
+            func_801E2864();
+            *(u16 *)(a0 + 0x34) = 4;
+        } else {
+            func_80178CBC(a0, D_801E672C);
+            *(u16 *)(a0 + 0x34) = 0;
+        }
+        break;
+    case 3:
+        if (func_801789AC(a0) != 0) {
+            func_80174438((*(s32 *)&D_80126B10));
+            *(u16 *)(a0 + 0x34) = 1;
+        }
+        break;
+    case 4:
+        if (((s16 (*)(void))func_801E288C)() != 0) {
+            *(u16 *)(a0 + 0x34) = 2;
+            func_80185B88(4);
+        }
+        break;
+    }
+}
+
+
+
+
+void func_801E54A4(void *a0) {
+
+    extern void (*D_801E67E0[])(void);
+    D_801E67E0[*(u16 *)((s32)a0 + 0x2)]();
+}
+
+
+INCLUDE_ASM("asm/md_SC03_135/nonmatchings/md_SC03_135_jr_801E5358", func_801E54E0);
+
+
+
+void func_801E54F0(void) {
+
+    extern s32 D_801EAC6C;
+    D_801EAC6C = 1;
+}
+
+
+
+
+s32 func_801E5504(void) {
+
+    extern s32 D_801EAC6C;
+    return D_801EAC6C;
+}
+
+
+INCLUDE_ASM("asm/md_SC03_135/nonmatchings/md_SC03_135_jr_801E5358", func_801E5514);
+
+INCLUDE_ASM("asm/md_SC03_135/nonmatchings/md_SC03_135_jr_801E5358", func_801E559C);
+
+INCLUDE_ASM("asm/md_SC03_135/nonmatchings/md_SC03_135_jr_801E5358", func_801E5624);
+
+INCLUDE_ASM("asm/md_SC03_135/nonmatchings/md_SC03_135_jr_801E5358", func_801E56A8);
+
+
+extern void func_8012C1B8(void);
+extern void func_8012CAE4(void *a0);
+extern void func_8001C214(s32 a0, s32 a1);
+extern void func_8012A828(s32 a0, s32 a1);
+extern void func_8012E8E0(s32 a0, s32 a1);
+extern s32 func_80178B18(s32 a0, s32 a1);
+
+void func_801E57C4(void *a0) {
+    extern s32 D_801CEA24;
+    extern s32 D_801BEAF8;
+    extern s32 D_801E669C;
+    extern s32 D_801E66CC;
+    s32 v0;
+    s32 ptr;
+
+    v0 = ((s32 (*)(void))func_8012C1B8)();
+    *(s32 *)((s32)a0 + 0x20) = v0;
+    if (v0 == 0) {
+        func_8012CAE4(a0);
+    } else {
+        func_8001C214(v0, (s32)&D_801CEA24);
+        ptr = *(s32 *)((s32)a0 + 0x68);
+        *(s16 *)(ptr + 0xC) = 0x7FFF;
+        *(s16 *)((s32)a0 + 0x2) = 1;
+        func_8012A828((s32)a0, (s32)&D_801BEAF8);
+        func_8012E8E0((s32)a0, (s32)&D_801E669C);
+        *(s16 *)((s32)a0 + 0x34) = 0;
+        func_80178B18((s32)a0, (s32)&D_801E66CC);
+    }
+}
+
+
+void *func_801E585C(void) {
+    typedef struct { s32 x, y, z; } SV4;
+    extern u8 D_80078EB1;
+    extern u8 D_80078E78[];
+    extern u32 D_801E6C68;
+    extern u32 D_801E6D8C;
+    extern s32 D_801EADF0;
+    extern void func_801E5A7C(void);
+    extern s32 func_80029504(void);
+    extern s32 func_801E5A1C(s32, s32, s32);
+    extern void func_801E5A34(s32, s32, s32);
+    extern void func_80029124(s32 a0, s32 a1);
+    extern void func_801E5AAC(void);
+    extern void func_801E5AFC(void);
+    extern void func_801E5B3C(void);
+    extern SV4 D_801EAC70;
+    s32 v;
+    u8 *p;
+
+    p = D_80078E78;
+    func_801E5A7C();
+    v = func_80029504();
+
+    if (v >= 0xC8) {
+        if (v < 0x258) {
+            if (func_801E5A1C(D_80078EB1, 0xD, 0x18)) {
+                if ((u32)(v - 0x136) < 0x46) {
+                    func_801E5A34(0xA, (s32)&D_801E6C68, (s32)func_801E5AFC);
+                    func_80029124(0x112, 1);
+                } else {
+                    func_801E5A34(0xA, 0, 0);
+                }
+            } else {
+                func_801E5A34(0xA, 0, 0);
+            }
+            if (func_801E5A1C(p[0x39], 0xD, 0x18)) {
+                if ((u32)(v - 0x136) < 0x46) {
+                    func_801E5A34(0xB, (s32)&D_801E6D8C, (s32)func_801E5B3C);
+                } else {
+                    func_801E5A34(0xB, 0, 0);
+                }
+            } else {
+                func_801E5A34(0xB, 0, 0);
+            }
+        } else {
+            func_801E5A34(0xA, 0, 0);
+            func_801E5A34(0xB, 0, 0);
+        }
+    } else {
+        func_801E5A34(0xA, 0, 0);
+        func_801E5A34(0xB, 0, 0);
+    }
+    func_801E5AAC();
+    if (D_801EADF0 == 0) {
+        return 0;
+    }
+    return &D_801EAC70;
+}
+
+
+s32 func_801E5998(s32 a0) {
+    extern s32 D_801EADF0;
+    extern s32 D_801EAC78;
+    extern s32 D_801EAC74;
+    s32 s0;
+    s32 v0;
+    s32 v1;
+    s32 limit;
+    func_801E585C();
+    s0 = a0;
+    v0 = D_801EADF0;
+    if (v0 > 0) {
+        v1 = 0;
+        limit = v0 * 16;
+        do {
+            if (*(s32 *)((s32)&D_801EAC78 + v1) == s0) {
+                return *(s32 *)((s32)&D_801EAC74 + v1);
+            }
+            v1 += 16;
+        } while (v1 < limit);
+    }
+    return 0;
+}
+
+
+s32 func_801E5A1C(s32 a0, s32 a1, s32 a2) {
+    return (a0 >= a1) && (a0 < a2);
+}
+
+
+void func_801E5A34(s32 a0, s32 a1, s32 a2) {
+    extern s32 D_801EADF0;
+    extern s32 D_801EAC74[][4];
+    extern s32 D_801EAC78[][4];
+    extern s32 D_801EAC7C[][4];
+    s32 n = D_801EADF0;
+    D_801EAC78[n][0] = a0;
+    D_801EAC74[n][0] = a1;
+    D_801EAC7C[n][0] = a2;
+    D_801EADF0 = n + 1;
+}
+
+
+extern s32 D_801EAC70;
+extern s32 D_801EADF0;
+extern void func_80016714(void *a0, s32 a1);
+
+void func_801E5A7C(void) {
+    func_80016714(&D_801EAC70, 0x180);
+    D_801EADF0 = 0;
+}
+
+
+INCLUDE_ASM("asm/md_SC03_135/nonmatchings/md_SC03_135_jr_801E5358", func_801E5AAC);
+
+extern s32 func_80029504(void);
+extern void func_80029124(s32 a0, s32 a1);
+extern void func_80029514(s32 arg0);
+
+void func_801E5AFC(void) {
+    func_80029124(0xFD, 0x1);
+    if (((s32 (*)(void))func_80029504)() == 0x136) {
+        ((void (*)(s32))func_80029514)(0x140);
+    }
+}
+
+
+extern s32 func_80029504(void);
+extern void func_80029124(s32 a0, s32 a1);
+extern void func_80029514(s32 arg0);
+
+void func_801E5B3C(void) {
+    func_80029124(0xFE, 0x1);
+    if (((s32 (*)(void))func_80029504)() == 0x136) {
+        ((void (*)(s32))func_80029514)(0x140);
+    }
+}
+
+