diff --git a/include/functions.h b/include/functions.h
index 832399af65..20440ca5ce 100644
--- a/include/functions.h
+++ b/include/functions.h
@@ -1583,7 +1583,7 @@ void func_800F03C0(GlobalContext* globalCtx);
 void func_800F048C(GlobalContext* globalCtx, Vec3f* param_2, u8 param_3, u16 param_4, u8 param_5);
 void Audio_PlaySoundAtPosition(GlobalContext* globalCtx, Vec3f* position, s32 param_3, u16 sfxId);
 void func_800F0590(GlobalContext* globalCtx, Vec3f* arg1, s32 arg2, s32 arg3);
-// void func_800F05C0(void);
+u16 ElfMessage_GetFirstCycleHint(GlobalContext* globalCtx);
 // void func_800F07C0(void);
 // void func_800F0888(void);
 // void func_800F0944(void);
diff --git a/src/code/z_elf_message.c b/src/code/z_elf_message.c
index a674f4564d..7308b33f4e 100644
--- a/src/code/z_elf_message.c
+++ b/src/code/z_elf_message.c
@@ -1,3 +1,62 @@
 #include "global.h"
 
-#pragma GLOBAL_ASM("asm/non_matchings/code/z_elf_message/func_800F05C0.s")
+u16 ElfMessage_GetFirstCycleHint(GlobalContext* globalCtx) {
+    if (INV_CONTENT(ITEM_OCARINA) == ITEM_OCARINA) {
+        return 0;
+    }
+    if (CURRENT_DAY <= 0) {
+        return 0;
+    }
+    if (gSaveContext.weekEventReg[88] & 0x20) {
+        return 0;
+    }
+    if (gSaveContext.weekEventReg[79] & 0x10) {
+        if (gSaveContext.weekEventReg[8] & 0x40) {
+            return 0;
+        }
+        return 0x224;
+    }
+    if (!(gSaveContext.weekEventReg[8] & 0x80)) {
+        if (gSaveContext.weekEventReg[9] & 1) {
+            return 0x21E;
+        }
+        if (globalCtx->sceneNum == SCENE_YOUSEI_IZUMI) {
+            return 0;
+        }
+        return 0x21D;
+    }
+    if (gSaveContext.magicAcquired != true) {
+        return 0x21F;
+    }
+    if (INV_CONTENT(ITEM_DEED_LAND) == ITEM_DEED_LAND) {
+        if (globalCtx->sceneNum != SCENE_OKUJOU) {
+            return 0x244;
+        }
+        return 0;
+    }
+    if (INV_CONTENT(ITEM_MOON_TEAR) == ITEM_MOON_TEAR) {
+        if (gSaveContext.weekEventReg[86] & 4) {
+            return 0x242;
+        }
+        return 0x243;
+    }
+    if (gSaveContext.weekEventReg[74] & 0x20) {
+        return 0x223;
+    }
+    if (gSaveContext.weekEventReg[73] & 0x80) {
+        return 0x222;
+    }
+    if (gSaveContext.weekEventReg[73] & 0x20) {
+        return 0x221;
+    }
+    if (gSaveContext.weekEventReg[77] & 2) {
+        if (gSaveContext.weekEventReg[73] & 0x10) {
+            return 0x240;
+        }
+        return 0x241;
+    }
+    if ((gSaveContext.weekEventReg[86] & 2) || (gSaveContext.weekEventReg[73] & 0x40)) {
+        return 0x23F;
+    }
+    return 0x220;
+}
diff --git a/tools/disasm/functions.txt b/tools/disasm/functions.txt
index f3780d6a6e..9ce11b32c1 100644
--- a/tools/disasm/functions.txt
+++ b/tools/disasm/functions.txt
@@ -1615,7 +1615,7 @@
     0x800F048C:("func_800F048C",),
     0x800F0568:("Audio_PlaySoundAtPosition",),
     0x800F0590:("func_800F0590",),
-    0x800F05C0:("func_800F05C0",),
+    0x800F05C0:("ElfMessage_GetFirstCycleHint",),
     0x800F07C0:("func_800F07C0",),
     0x800F0888:("func_800F0888",),
     0x800F0944:("func_800F0944",),