diff --git a/data/uking_functions.csv b/data/uking_functions.csv
index 18ded1c0..ee32db97 100644
--- a/data/uking_functions.csv
+++ b/data/uking_functions.csv
@@ -89372,7 +89372,7 @@
 0x00000071010e7000,wm::TimeMgr::handleNewDay,608,
 0x00000071010e7260,nullsub_4540,4,
 0x00000071010e7264,wm::TimeMgr::calc,2676,
-0x00000071010e7cd8,wm::TimeMgr::AnimalMasterFlags::calc,772,
+0x00000071010e7cd8,wm::TimeMgr::AnimalMasterFlags::calc,772,_ZN4ksys5world7TimeMgr22AnimalMasterController4calcEv
 0x00000071010e7fdc,wm::TimeMgr::m7_null,4,_ZN4ksys5world7TimeMgr10calcType1_Ev
 0x00000071010e7fe0,wm::TimeMgr::m8_null,4,_ZN4ksys5world7TimeMgr10calcType2_Ev
 0x00000071010e7fe4,wm::TimeMgr::setNewTime,16,_ZN4ksys5world7TimeMgr23setTimeWithoutDayChecksEf
diff --git a/src/KingSystem/ActorSystem/actActorConstDataAccess.h b/src/KingSystem/ActorSystem/actActorConstDataAccess.h
index 0b09fb79..0244893b 100644
--- a/src/KingSystem/ActorSystem/actActorConstDataAccess.h
+++ b/src/KingSystem/ActorSystem/actActorConstDataAccess.h
@@ -102,6 +102,8 @@ public:
     bool checkFlag18() const;
     bool isPlayerTheConnectedParent() const;
 
+    const sead::Vector3f& getPreviousPos() const;
+
     void setThisActorAsParent(BaseProc* child, bool delete_parent_on_delete);
     void setThisActorAsChild(BaseProc* parent, bool delete_child_on_delete);
 
diff --git a/src/KingSystem/ActorSystem/actActorSystem.h b/src/KingSystem/ActorSystem/actActorSystem.h
index 2af35cf4..b147658b 100644
--- a/src/KingSystem/ActorSystem/actActorSystem.h
+++ b/src/KingSystem/ActorSystem/actActorSystem.h
@@ -6,6 +6,8 @@
 
 namespace ksys::act {
 
+class ActorConstDataAccess;
+
 // TODO: incomplete
 class ActorSystem {
     SEAD_SINGLETON_DISPOSER(ActorSystem)
@@ -14,6 +16,8 @@ class ActorSystem {
 public:
     void onBaseProcMgrCalc();
 
+    bool getPlayer(ActorConstDataAccess* accessor);
+
     bool getAutoPlacementActorPos(const sead::SafeString& name, sead::Vector3f* pos) const;
 
     sead::Heap* getEmergencyHeap() const { return mEmergencyHeap; }
diff --git a/src/KingSystem/GameData/gdtManager.h b/src/KingSystem/GameData/gdtManager.h
index 9d51decf..cf325162 100644
--- a/src/KingSystem/GameData/gdtManager.h
+++ b/src/KingSystem/GameData/gdtManager.h
@@ -513,6 +513,11 @@ public:
     const al::ByamlIter& getShopSoldOutInfoValues() const { return mShopSoldOutInfoValues; }
     const u32* getShopSoldOutInfoHashes() const { return mShopSoldOutInfoHashes; }
 
+    void onAnimalMasterAppearance() {
+        mBitFlags.set(BitFlag::_8);
+        mResetFlags.set(ResetFlag::AnimalMaster);
+    }
+
 private:
     enum class BitFlag {
         _1 = 0x1,
@@ -539,7 +544,7 @@ private:
     };
 
     enum class ResetFlag {
-
+        AnimalMaster = 0x10,
     };
 
     struct MethodTreeNode {
diff --git a/src/KingSystem/World/worldTimeMgr.cpp b/src/KingSystem/World/worldTimeMgr.cpp
index 2c7eff5e..d2330291 100644
--- a/src/KingSystem/World/worldTimeMgr.cpp
+++ b/src/KingSystem/World/worldTimeMgr.cpp
@@ -1,4 +1,8 @@
 #include "KingSystem/World/worldTimeMgr.h"
+#include <random/seadGlobalRandom.h>
+#include "KingSystem/ActorSystem/actActorConstDataAccess.h"
+#include "KingSystem/ActorSystem/actActorSystem.h"
+#include "KingSystem/Ecosystem/ecoUtil.h"
 #include "KingSystem/GameData/gdtManager.h"
 #include "KingSystem/World/worldManager.h"
 
@@ -178,6 +182,103 @@ bool TimeMgr::isInRelicBattle() const {
     return in_battle;
 }
 
+void TimeMgr::AnimalMasterController::calc() {
+    const auto num_days = Manager::instance()->getTimeMgr()->getNumberOfDays();
+
+    act::ActorConstDataAccess player_accessor;
+    act::ActorSystem::instance()->getPlayer(&player_accessor);
+
+    const int day_of_week = num_days % 7;
+
+    switch (state) {
+    case 0: {
+        if (Manager::instance()->getTimeMgr()->getMoonType() != MoonType::WaxingCrescent)
+            break;
+
+        bool exists;
+        if (gdt::Manager::instance() == nullptr)
+            break;
+        if (!gdt::Manager::instance()->getBool(existence_flag, &exists, true, true))
+            break;
+        if (exists)
+            break;
+
+        if (!player_accessor.hasProc())
+            break;
+        if (eco::currentAreaNumIs64(player_accessor.getPreviousPos()))
+            break;
+
+        appearance_hour = sead::GlobalRandom::instance()->getU32(23);
+        ++state;
+        break;
+    }
+
+    case 1: {
+        if (!player_accessor.hasProc())
+            break;
+
+        if (eco::currentAreaNumIs64(player_accessor.getPreviousPos())) {
+            state = 0;
+            break;
+        }
+
+        int hour = Manager::instance()->getTimeMgr()->getHour();
+        if (hour != appearance_hour)
+            break;
+
+        hour += 24;
+        if (hour >= 24)
+            hour -= 24;
+        valid_hour = hour;
+
+        gdt::Manager::instance()->setBool(true, appearance_flag);
+        if (gdt::Manager::instance())
+            gdt::Manager::instance()->onAnimalMasterAppearance();
+
+        ++state;
+        break;
+    }
+
+    case 2: {
+        if (Manager::instance()->getTimeMgr()->getHour() == valid_hour)
+            break;
+
+        start_day_of_week = day_of_week;
+        ++state;
+        break;
+    }
+
+    case 3: {
+        u8 dow = day_of_week;
+        if (dow < start_day_of_week)
+            dow += 7;
+
+        const auto should_disappear = [this, dow](u8 day) {
+            if (u8(dow - start_day_of_week) >= 2)
+                return true;
+
+            return start_day_of_week != day &&
+                   Manager::instance()->getTimeMgr()->getHour() >= valid_hour;
+        };
+
+        if (!should_disappear(day_of_week))
+            break;
+
+        gdt::Manager::instance()->setBool(false, appearance_flag);
+        ++state;
+        break;
+    }
+
+    case 4: {
+        if (Manager::instance()->getTimeMgr()->getMoonType() == MoonType::WaxingCrescent)
+            break;
+
+        state = 0;
+        break;
+    }
+    }
+}
+
 void TimeMgr::calcType1_() {}
 
 void TimeMgr::calcType2_() {}
diff --git a/src/KingSystem/World/worldTimeMgr.h b/src/KingSystem/World/worldTimeMgr.h
index cabf9bfa..c2719280 100644
--- a/src/KingSystem/World/worldTimeMgr.h
+++ b/src/KingSystem/World/worldTimeMgr.h
@@ -75,6 +75,19 @@ public:
     float getTemperatureMultiplier() const;
     bool isTimeFlowingNormally() const;
 
+    int getTimeDivision() const { return mTimeDivision; }
+    sead::DelegateEvent<NewDayEvent>& getNewDaySignal() { return mNewDaySignal; }
+    float getTimeStep() const { return mTimeStep; }
+    float getBloodMoonTimer() const { return mBloodMoonTimer; }
+    int getNumberOfDays() const { return mNumberOfDays; }
+    bool isForceBloodyDay() const { return mForceBloodyDay; }
+    bool isPlayedDemo103Or997() const { return mPlayedDemo103Or997; }
+    bool isFindDungeonActivated() const { return mFindDungeonActivated; }
+    bool isResetGdtOnNextSceneUnloadForBloodMoon() const {
+        return mResetGdtOnNextSceneUnloadForBloodMoon;
+    }
+    bool wasBloodyDay() const { return mWasBloodyDay; }
+
 protected:
     void init_(sead::Heap* heap) override;
     void calc_() override;
@@ -87,10 +100,6 @@ private:
     };
 
     struct AnimalMasterController {
-        enum class State {
-
-        };
-
         void calc();
 
         void resetState() {
@@ -102,7 +111,7 @@ private:
 
         gdt::FlagHandle appearance_flag = gdt::InvalidHandle;
         gdt::FlagHandle existence_flag = gdt::InvalidHandle;
-        State state{};
+        int state{};
         int appearance_hour{};
         int valid_hour{};
         u8 start_day_of_week{};