diff --git a/Source/Contents/Effects/MappillarEffect.cpp b/Source/Contents/Effects/MappillarEffect.cpp
index bfe75c66..b09bd5f1 100644
--- a/Source/Contents/Effects/MappillarEffect.cpp
+++ b/Source/Contents/Effects/MappillarEffect.cpp
@@ -1,11 +1,24 @@
 #include "Contents/Effects/MappillarEffect.h"
 
+#include "Contents/Effects/EffectMemoryMgr.h"
 #include "Contents/Effects/Particle.h"
 #include "Utility/Math/AffineMatrix.h"
 
 #include <algorithm>
 #include <cstring>
 
+// OFFSET: 0x00B4BBB0
+// FUNCTION: fn_18955
+void CMappillarEffect::Close() {
+  for (auto it = this->particles.begin(); it != this->particles.end(); ++it) {
+    FreeParticle(*it);
+  }
+
+  this->particles.clear();
+}
+
+// OFFSET: 0x00B4BBF0
+
 // OFFSET: 0x00B4C0B0
 // FUNCTION: fn_18957
 bool CMappillarEffect::Slot06() {
diff --git a/Source/Contents/Effects/MappillarEffect.h b/Source/Contents/Effects/MappillarEffect.h
index a79edd03..390dbea9 100644
--- a/Source/Contents/Effects/MappillarEffect.h
+++ b/Source/Contents/Effects/MappillarEffect.h
@@ -2,6 +2,7 @@
 #define RAGNAROK_SOURCE_CONTENTS_EFFECTS_MAPPILLAREFFECT_H
 
 #include "Contents/Effects/Effect.h"
+#include "Utility/Math/Vector3d.h"
 
 #include <cstddef>
 #include <vector>
@@ -10,11 +11,14 @@ class CParticle;
 
 class CMappillarEffect : public CEffect {
 public:
+  void Slot01() override;
   void Slot03() override;
   void Slot04() override;
+  void Close() override;
   bool Slot06() override;
 
-  /* 00CC */ unsigned char unknown_00CC[0x18];
+  /* 00CC */ vector3d lastInner;
+  /* 00D8 */ vector3d lastOuter;
   /* 00E4 */ std::vector<CParticle*> particles;
 };