diff --git a/config/regions.tsv b/config/regions.tsv
index 0d9b556..6f349a3 100644
--- a/config/regions.tsv
+++ b/config/regions.tsv
@@ -93,6 +93,7 @@
 0x8002DEB4	0x8002DF1C	src/func_8002DEB4.c
 0x8002E028	0x8002E070	src/func_8002E028.c
 0x8002E3A8	0x8002E3B8	src/func_8002E3A8.c
+0x8002E3FC	0x8002E44C	src/func_8002E3FC.c
 0x8002E4C8	0x8002E4F0	src/func_8002E4C8.c
 0x8002E7C4	0x8002E7E4	src/func_8002E7C4.c
 0x8002E968	0x8002E9AC	src/func_8002E968.c
diff --git a/config/symbols.tsv b/config/symbols.tsv
index 17db0ef..5ce85d6 100644
--- a/config/symbols.tsv
+++ b/config/symbols.tsv
@@ -381,6 +381,7 @@ func_80024668	0x80024668
 func_8002F404	0x8002F404
 func_800695D8	0x800695D8
 func_800F4098	0x800F4098
+g_80121BFA	0x80121BFA	gp
 g_80122068	0x80122068	gp
 g_80122158	0x80122158	gp
 g_80122354	0x80122354
diff --git a/src/func_8002E3FC.c b/src/func_8002E3FC.c
new file mode 100644
index 0000000..cd79ce6
--- /dev/null
+++ b/src/func_8002E3FC.c
@@ -0,0 +1,51 @@
+/*
+ * func_8002E3FC — 80 bytes at 0x8002E3FC..0x8002E44C
+ *
+ * One-shot initialiser guarded by a gp-relative flag byte: returns immediately if
+ * the flag is already set, otherwise sets it and makes three calls.
+ *
+ * The observed instructions are:
+ *     lbu   v0,706(gp)         ; v0 = D_80121BFA        <- UNSIGNED byte
+ *     addiu sp,sp,-24
+ *     bnez  v0,0x8002E43C      ; if (already done) return
+ *     sw    ra,16(sp)          ; save ra                  (delay slot)
+ *     li    v0,1
+ *     sb    v0,706(gp)         ; D_80121BFA = 1
+ *     move  a0,zero
+ *     jal   0x80062D10
+ *     move  a1,zero            ; second argument = 0      (delay slot)
+ *     move  a0,zero
+ *     jal   0x80062D10
+ *     li    a1,12              ; second argument = 12     (delay slot)
+ *     lui   a1,0x8003
+ *     addiu a1,a1,-7240        ; a1 = D_8002E3B8
+ *     jal   0x800592A4
+ *     move  a0,zero            ; first argument = 0       (delay slot)
+ * 3C: lw    ra,16(sp)
+ *     addiu sp,sp,24
+ *     jr    ra
+ *     nop
+ *
+ * The guard is `if (flag != 0) return;` — the early-return form — because the
+ * whole body is skipped and there is only one epilogue. The gp flag is read and
+ * written with `lbu`/`sb`, so it is an unsigned byte.
+ *
+ * LIMITS: the gp offset (706 = 0x2C2; gp = 0x80121938, so the symbol is at 0x80121BFA), the constant (12), the function address
+ * D_8002E3B8 and the three callees are hypotheses read from the instruction
+ * shape; the gp offset is a fact about this executable's gp layout. What the flag
+ * and the callees mean is unknown and is not guessed here. Only the compiled bytes
+ * are evidence.
+ */
+
+extern unsigned char g_80121BFA;
+extern char D_8002E3B8[];
+
+void func_8002E3FC(void) {
+    if (g_80121BFA != 0)
+        return;
+
+    g_80121BFA = 1;
+    func_80062D10(0, 0);
+    func_80062D10(0, 12);
+    func_800592A4(0, (int)D_8002E3B8);
+}