diff --git a/include/functions.h b/include/functions.h
index e1d4bb45b..201a7c5c7 100644
--- a/include/functions.h
+++ b/include/functions.h
@@ -1977,9 +1977,9 @@ s32 Inventory_HasItemInBottle(u8 itemId);
 // void Interface_LoadActionLabel(void);
 void Interface_SetDoAction(GlobalContext* globalCtx, u16 arg1);
 // void func_801155B4(void);
-// void func_80115764(void);
+// void Interface_SetNaviCall(void);
 void func_80115844(GlobalContext* globalCtx, s16 param_2);
-s32 func_80115908(GlobalContext* globalCtx, u8 param_2);
+s32 Health_ChangeBy(GlobalContext* globalCtx, s16 param_2);
 void Health_GiveHearts(s16 hearts);
 void Rupees_ChangeBy(s16 arg0);
 void Inventory_ChangeAmmo(s16 arg0, s16 arg1);
diff --git a/src/code/z_en_item00.c b/src/code/z_en_item00.c
index 7100aec71..9dda61d3f 100644
--- a/src/code/z_en_item00.c
+++ b/src/code/z_en_item00.c
@@ -215,7 +215,7 @@ void EnItem00_Init(Actor* thisx, GlobalContext* globalCtx) {
             break;
         case ITEM00_FLEXIBLE:
         case ITEM00_BIG_FAIRY:
-            func_80115908(globalCtx, 0x70);
+            Health_ChangeBy(globalCtx, 0x70);
             break;
         case ITEM00_BOMBS_A:
         case ITEM00_BOMBS_B:
@@ -528,7 +528,7 @@ void EnItem00_Update(Actor* thisx, GlobalContext* globalCtx) {
             break;
         case ITEM00_FLEXIBLE:
         case ITEM00_BIG_FAIRY:
-            func_80115908(globalCtx, 0x70);
+            Health_ChangeBy(globalCtx, 0x70);
             break;
         case ITEM00_BOMBS_A:
         case ITEM00_BOMBS_B:
diff --git a/src/code/z_parameter.c b/src/code/z_parameter.c
index 73aed66aa..687066760 100644
--- a/src/code/z_parameter.c
+++ b/src/code/z_parameter.c
@@ -171,9 +171,8 @@ s16 sHBAScoreTier = 0;
 
 u16 sMinigameScoreDigits[] = { 0, 0, 0, 0 };
 
-s32 D_801BF898 = 0;
-
-s32 D_801BF89C = 0;
+s16 D_801BF898 = 0;
+s16 D_801BF89C = 0;
 
 s16 sMagicBarOutlinePrimRed = 255;
 s16 sMagicBarOutlinePrimGreen = 255;
@@ -1750,7 +1749,7 @@ u8 Item_Give(GlobalContext* globalCtx, u8 item) {
         return ITEM_NONE;
 
     } else if (item == ITEM_HEART) {
-        func_80115908(globalCtx, 0x10);
+        Health_ChangeBy(globalCtx, 0x10);
         return item;
 
     } else if (item == ITEM_MAGIC_SMALL) {
@@ -2047,13 +2046,89 @@ void Interface_SetDoAction(GlobalContext* globalCtx, u16 action) {
     }
 }
 
-#pragma GLOBAL_ASM("asm/non_matchings/code/z_parameter/func_801155B4.s")
+void func_801155B4(GlobalContext* globalCtx, s16 arg1) {
+    InterfaceContext* interfaceCtx = &globalCtx->interfaceCtx;
 
-#pragma GLOBAL_ASM("asm/non_matchings/code/z_parameter/func_80115764.s")
+    if (((gSaveContext.save.equips.buttonItems[CUR_FORM][0] >= ITEM_SWORD_KOKIRI) &&
+         (gSaveContext.save.equips.buttonItems[CUR_FORM][0] <= ITEM_SWORD_GILDED)) ||
+        (gSaveContext.save.equips.buttonItems[CUR_FORM][0] == ITEM_NONE) ||
+        (gSaveContext.save.equips.buttonItems[CUR_FORM][0] == ITEM_NUT)) {
+        if ((CUR_FORM == PLAYER_FORM_DEKU) && (gSaveContext.save.playerData.magicAcquired == 0)) {
+            interfaceCtx->unk_21E = 0xFD;
+        } else {
+            interfaceCtx->unk_21E = arg1;
+            if (interfaceCtx->unk_21E != 0xA) {
+                osCreateMesgQueue(&interfaceCtx->loadQueue, &interfaceCtx->loadMsg, 1);
+                DmaMgr_SendRequestImpl(&interfaceCtx->dmaRequest_184, interfaceCtx->doActionSegment + 0x600,
+                                       (arg1 * 0x180) + SEGMENT_ROM_START(do_action_static), 0x180, 0,
+                                       &interfaceCtx->loadQueue, NULL);
+                osRecvMesg(&interfaceCtx->loadQueue, NULL, OS_MESG_BLOCK);
+            }
 
-#pragma GLOBAL_ASM("asm/non_matchings/code/z_parameter/func_80115844.s")
+            interfaceCtx->unk_21C = 1;
+        }
+    } else {
+        interfaceCtx->unk_21C = 0;
+        interfaceCtx->unk_21E = 0;
+    }
+}
+
+void Interface_SetNaviCall(GlobalContext* globalCtx, u16 naviCallState) {
+    InterfaceContext* interfaceCtx = &globalCtx->interfaceCtx;
+
+    if (((naviCallState == 0x2A) || (naviCallState == 0x2B)) && (interfaceCtx->unk_220 == 0) &&
+        (globalCtx->csCtx.state == 0)) {
+        if (naviCallState == 0x2B) {
+            play_sound(NA_SE_VO_NAVY_CALL);
+        }
+        if (naviCallState == 0x2A) {
+            func_8019FDC8(&D_801DB4A4, NA_SE_VO_NA_HELLO_2, 0x20);
+        }
+        interfaceCtx->unk_220 = 1;
+        D_801BF898 = 0;
+        D_801BF89C = 10;
+    } else if (naviCallState == 0x2C) {
+        if (interfaceCtx->unk_220 != 0) {
+            interfaceCtx->unk_220 = 0;
+        }
+    }
+}
+
+// Interface_LoadActionLabelB?
+void func_80115844(GlobalContext* globalCtx, s16 arg1) {
+    InterfaceContext* interfaceCtx = &globalCtx->interfaceCtx;
+
+    interfaceCtx->unk_224 = arg1;
+
+    osCreateMesgQueue(&globalCtx->interfaceCtx.loadQueue, &globalCtx->interfaceCtx.loadMsg, 1);
+    DmaMgr_SendRequestImpl(&interfaceCtx->dmaRequest_184, interfaceCtx->doActionSegment + 0x480, (arg1 * 0x180) + SEGMENT_ROM_START(do_action_static), 0x180, 0, &interfaceCtx->loadQueue, NULL);
+    osRecvMesg(&interfaceCtx->loadQueue, NULL, OS_MESG_BLOCK);
+
+    interfaceCtx->unk_222 = 1;
+}
+
+s32 Health_ChangeBy(GlobalContext* globalCtx, s16 healthChange) {
+
+    if (healthChange > 0) {
+        play_sound(NA_SE_SY_HP_RECOVER);
+    } else if ((gSaveContext.save.playerData.doubleDefense != 0) && (healthChange < 0)) {
+        healthChange >>= 1;
+    }
+
+    gSaveContext.save.playerData.health += healthChange;
+
+    if (((void)0, gSaveContext.save.playerData.health) > ((void)0, gSaveContext.save.playerData.healthCapacity)) {
+        gSaveContext.save.playerData.health = gSaveContext.save.playerData.healthCapacity;
+    }
+
+    if (gSaveContext.save.playerData.health <= 0) {
+        gSaveContext.save.playerData.health = 0;
+        return false;
+    } else {
+        return true;
+    }
+}
 
-#pragma GLOBAL_ASM("asm/non_matchings/code/z_parameter/func_80115908.s")
 
 void Health_GiveHearts(s16 hearts) {
     gSaveContext.save.playerData.healthCapacity += hearts * 0x10;
diff --git a/src/overlays/actors/ovl_En_Elf/z_en_elf.c b/src/overlays/actors/ovl_En_Elf/z_en_elf.c
index 472ece34b..5f175cdb8 100644
--- a/src/overlays/actors/ovl_En_Elf/z_en_elf.c
+++ b/src/overlays/actors/ovl_En_Elf/z_en_elf.c
@@ -673,7 +673,7 @@ void func_8088DD34(EnElf* this, GlobalContext* globalCtx) {
 
     if ((this->fairyFlags & 0x1000) && (heightDiff > 0.0f) && (heightDiff < 60.0f) &&
         !func_8088C804(&this->actor.world.pos, &refActor->actor.world.pos, 10.0f)) {
-        func_80115908(globalCtx, 0x80);
+        Health_ChangeBy(globalCtx, 0x80);
         if (this->fairyFlags & 0x200) {
             Interface_AddMagic(globalCtx, ((void)0, gSaveContext.unk_3F30) +
                                               (gSaveContext.save.playerData.doubleMagic * 0x30) + 0x30);
diff --git a/src/overlays/actors/ovl_En_Elforg/z_en_elforg.c b/src/overlays/actors/ovl_En_Elforg/z_en_elforg.c
index c33495438..71f15a6a2 100644
--- a/src/overlays/actors/ovl_En_Elforg/z_en_elforg.c
+++ b/src/overlays/actors/ovl_En_Elforg/z_en_elforg.c
@@ -440,7 +440,7 @@ void EnElforg_FreeFloating(EnElforg* this, GlobalContext* globalCtx) {
     if (!Player_InCsMode(&globalCtx->state)) {
         if ((this->actor.xzDistToPlayer < 30.0f) && (scaledYDistance < 12.0f) && (scaledYDistance > -68.0f)) {
             EnElforg_SetupFairyCollected(this, globalCtx);
-            func_80115908(globalCtx, 48);
+            Health_ChangeBy(globalCtx, 48);
             switch (STRAY_FAIRY_TYPE(&this->actor)) {
                 case STRAY_FAIRY_TYPE_COLLECTIBLE:
                     Flags_SetCollectible(globalCtx, STRAY_FAIRY_FLAG(&this->actor));
diff --git a/tools/disasm/functions.txt b/tools/disasm/functions.txt
index f2141726a..4bd9a7aaa 100644
--- a/tools/disasm/functions.txt
+++ b/tools/disasm/functions.txt
@@ -2128,9 +2128,9 @@
     0x80115428:("Interface_LoadActionLabel",),
     0x8011552C:("Interface_SetDoAction",),
     0x801155B4:("func_801155B4",),
-    0x80115764:("func_80115764",),
+    0x80115764:("Interface_SetNaviCall",),
     0x80115844:("func_80115844",),
-    0x80115908:("func_80115908",),
+    0x80115908:("Health_ChangeBy",),
     0x801159C0:("Health_GiveHearts",),
     0x801159EC:("Rupees_ChangeBy",),
     0x80115A14:("Inventory_ChangeAmmo",),
diff --git a/tools/sizes/code_functions.csv b/tools/sizes/code_functions.csv
index 532fff5f4..edea6d621 100644
--- a/tools/sizes/code_functions.csv
+++ b/tools/sizes/code_functions.csv
@@ -1642,9 +1642,9 @@ asm/non_matchings/code/z_parameter/func_801153C8.s,func_801153C8,0x801153C8,0x18
 asm/non_matchings/code/z_parameter/Interface_LoadActionLabel.s,Interface_LoadActionLabel,0x80115428,0x41
 asm/non_matchings/code/z_parameter/Interface_SetDoAction.s,Interface_SetDoAction,0x8011552C,0x22
 asm/non_matchings/code/z_parameter/func_801155B4.s,func_801155B4,0x801155B4,0x6C
-asm/non_matchings/code/z_parameter/func_80115764.s,func_80115764,0x80115764,0x38
+asm/non_matchings/code/z_parameter/Interface_SetNaviCall.s,Interface_SetNaviCall,0x80115764,0x38
 asm/non_matchings/code/z_parameter/func_80115844.s,func_80115844,0x80115844,0x31
-asm/non_matchings/code/z_parameter/func_80115908.s,func_80115908,0x80115908,0x2E
+asm/non_matchings/code/z_parameter/Health_ChangeBy.s,Health_ChangeBy,0x80115908,0x2E
 asm/non_matchings/code/z_parameter/Health_GiveHearts.s,Health_GiveHearts,0x801159C0,0xB
 asm/non_matchings/code/z_parameter/Rupees_ChangeBy.s,Rupees_ChangeBy,0x801159EC,0xA
 asm/non_matchings/code/z_parameter/Inventory_ChangeAmmo.s,Inventory_ChangeAmmo,0x80115A14,0xC0