diff --git a/Source/Contents/Items/ItemInfoMgr.cpp b/Source/Contents/Items/ItemInfoMgr.cpp
new file mode 100644
index 00000000..a73c784e
--- /dev/null
+++ b/Source/Contents/Items/ItemInfoMgr.cpp
@@ -0,0 +1,258 @@
+#include "Contents/Items/ItemInfoMgr.h"
+
+#include "Contents/Items/ItemDescription.h"
+
+extern "C" {
+#include <lauxlib.h>
+#include <lua.h>
+}
+#include <algorithm>
+#include <cstdarg>
+#include <cstdio>
+#include <cstring>
+#include <new>
+
+// GLOBAL: gl_24729
+CItemInfoMgr* g_itemInfoMgr;
+
+// OFFSET: 0x00ADFDB0
+// FUNCTION: fn_17976
+bool CItemInfoMgr::Create() {
+  if (g_itemInfoMgr == nullptr) {
+    g_itemInfoMgr = new (std::nothrow) CItemInfoMgr();
+    if (g_itemInfoMgr != nullptr) {
+      if (g_itemInfoMgr->m_isValid) {
+        return true;
+      }
+      delete g_itemInfoMgr;
+      g_itemInfoMgr = nullptr;
+    }
+  }
+  return false;
+}
+
+// OFFSET: 0x00ADFEA0
+// FUNCTION: fn_17977
+void CItemInfoMgr::Destroy() {
+  if (g_itemInfoMgr != nullptr) {
+    delete g_itemInfoMgr;
+    g_itemInfoMgr = nullptr;
+  }
+}
+
+// OFFSET: 0x00ADFEC0
+// FUNCTION: fn_17978
+int CItemInfoMgr::IsCostume(int id) {
+  return this->m_items[id].isCostume;
+}
+
+// OFFSET: 0x00ADFEE0
+// FUNCTION: fn_17979
+int CItemInfoMgr::GetEffectId(int id) {
+  std::map<int, lcData>::iterator it = this->m_items.find(id);
+  if (it == this->m_items.end()) {
+    return -1;
+  }
+  return it->second.effectId;
+}
+
+// OFFSET: 0x00ADFF30
+// FUNCTION: fn_17980
+const char* CItemInfoMgr::GetFileName() {
+  return "System\\iteminfo_true.lub";
+}
+
+// OFFSET: 0x00ADFF40
+// FUNCTION: fn_17981
+int CItemInfoMgr::GetPackageId(int id) {
+  std::map<int, lcData>::iterator it = this->m_items.find(id);
+  if (it != this->m_items.end()) {
+    return it->second.packageId;
+  }
+  return 0;
+}
+
+// OFFSET: 0x00AE0270
+// FUNCTION: fn_17983
+static __declspec(noinline) std::string FormatItemInfoMessage(const char* format, ...) {
+  char buffer[2049];
+  std::memset(buffer, 0, sizeof(buffer));
+  va_list arguments;
+  va_start(arguments, format);
+  _vsnprintf(buffer, 2048, format, arguments);
+  va_end(arguments);
+  return std::string(buffer);
+}
+
+// OFFSET: 0x00AE0360
+// FUNCTION: fn_17984
+void CItemInfoMgr::SetItemInfo(std::map<int, ITEM_DESC>& descriptions) const {
+  class lcMyInsertDesc {
+  public:
+    explicit lcMyInsertDesc(std::vector<const char*>* lines) : m_lines(lines) {
+    }
+    // OFFSET: 0x00ADF8B0
+    // FUNCTION: fn_17971
+    virtual ~lcMyInsertDesc() {
+    }
+    void operator()(const std::string& line) {
+      this->m_lines->push_back(line.c_str());
+    }
+
+    std::vector<const char*>* m_lines;
+  };
+
+  for (std::map<int, lcData>::const_iterator it = this->m_items.begin(); it != this->m_items.end(); ++it) {
+    ItemDescriptions table{descriptions};
+    ITEM_DESC& desc = table.Ensure(it->first);
+    desc.identifiedName = it->second.identifiedDisplayName.c_str();
+    desc.identifiedResource = it->second.identifiedResourceName.c_str();
+    std::for_each(it->second.identifiedDescription.begin(), it->second.identifiedDescription.end(),
+                  lcMyInsertDesc(&desc.identifiedDescription));
+    desc.unidentifiedName = it->second.unidentifiedDisplayName.c_str();
+    desc.unidentifiedResource = it->second.unidentifiedResourceName.c_str();
+    std::for_each(it->second.unidentifiedDescription.begin(), it->second.unidentifiedDescription.end(),
+                  lcMyInsertDesc(&desc.unidentifiedDescription));
+    desc.slots = it->second.slotCount;
+    desc.unknown_0040 = it->second.classNum;
+  }
+}
+
+// OFFSET: 0x00AE07A0
+// FUNCTION: fn_17986
+int CItemInfoMgr::LuaAddItem(lua_State* state) {
+  if (!lua_isnumber(state, -1)) {
+    lua_pushboolean(state, 0);
+    lua_pushstring(state, FormatItemInfoMessage("7th argment is must number").c_str());
+    return 2;
+  }
+  int id = static_cast<int>(lua_tonumber(state, -7));
+  if (!lua_isnumber(state, -2)) {
+    lua_pushboolean(state, 0);
+    lua_pushstring(state, FormatItemInfoMessage("6th argment is must number [itemID:%d]", id).c_str());
+  } else if (!lua_isstring(state, -3)) {
+    lua_pushboolean(state, 0);
+    lua_pushstring(state, FormatItemInfoMessage("5th argment is must string [itemID:%d]", id).c_str());
+  } else if (!lua_isstring(state, -4)) {
+    lua_pushboolean(state, 0);
+    lua_pushstring(state, FormatItemInfoMessage("4th argment is must string [itemID:%d]", id).c_str());
+  } else if (!lua_isstring(state, -5)) {
+    lua_pushboolean(state, 0);
+    lua_pushstring(state, FormatItemInfoMessage("3th argment is must string [itemID:%d]", id).c_str());
+  } else if (!lua_isstring(state, -6)) {
+    lua_pushboolean(state, 0);
+    lua_pushstring(state, FormatItemInfoMessage("2nd argment is must string [itemID:%d]", id).c_str());
+  } else if (!lua_isnumber(state, -7)) {
+    lua_pushboolean(state, 0);
+    lua_pushstring(state, FormatItemInfoMessage("1st argment is must number [itemID:%d]", id).c_str());
+  } else {
+    const char* unidentifiedDisplayName = lua_tostring(state, -6);
+    const char* unidentifiedResourceName = lua_tostring(state, -5);
+    const char* identifiedDisplayName = lua_tostring(state, -4);
+    const char* identifiedResourceName = lua_tostring(state, -3);
+    int slotCount = static_cast<int>(lua_tonumber(state, -2));
+    int classNum = static_cast<int>(lua_tonumber(state, -1));
+    g_itemInfoMgr->m_items[id].slotCount = slotCount;
+    g_itemInfoMgr->m_items[id].classNum = classNum;
+    g_itemInfoMgr->SetUnidentifiedName(id, unidentifiedDisplayName, unidentifiedResourceName);
+    g_itemInfoMgr->SetIdentifiedName(id, identifiedDisplayName, identifiedResourceName);
+    lua_pushboolean(state, 1);
+    lua_pushstring(state, FormatItemInfoMessage("good").c_str());
+  }
+  return 2;
+}
+
+// OFFSET: 0x00AE0B70
+// FUNCTION: fn_17987
+int CItemInfoMgr::LuaAddItemEffectInfo(lua_State* state) {
+  if (!lua_isnumber(state, -1)) {
+    lua_pushboolean(state, 0);
+    lua_pushstring(state, FormatItemInfoMessage("2nd argment is must number").c_str());
+  } else if (!lua_isnumber(state, -2)) {
+    lua_pushboolean(state, 0);
+    lua_pushstring(state, FormatItemInfoMessage("1st argment is must number").c_str());
+  } else {
+    int id = static_cast<int>(lua_tonumber(state, -2));
+    int effectId = static_cast<int>(lua_tonumber(state, -1));
+    g_itemInfoMgr->m_items[id].effectId = effectId;
+    lua_pushboolean(state, 1);
+    lua_pushstring(state, FormatItemInfoMessage("good").c_str());
+  }
+  return 2;
+}
+
+// OFFSET: 0x00AE0CB0
+// FUNCTION: fn_17988
+int CItemInfoMgr::LuaAddItemIdentifiedDesc(lua_State* state) {
+  if (!lua_isstring(state, -1)) {
+    lua_pushboolean(state, 0);
+    lua_pushstring(state, FormatItemInfoMessage("2nd argment is must string").c_str());
+  } else if (!lua_isnumber(state, -2)) {
+    lua_pushboolean(state, 0);
+    lua_pushstring(state, FormatItemInfoMessage("1st argment is must number").c_str());
+  } else {
+    int id = static_cast<int>(lua_tonumber(state, -2));
+    std::string line = lua_tostring(state, -1);
+    g_itemInfoMgr->m_items[id].identifiedDescription.push_back(line);
+    lua_pushboolean(state, 1);
+    lua_pushstring(state, FormatItemInfoMessage("good").c_str());
+  }
+  return 2;
+}
+
+// OFFSET: 0x00AE0E60
+// FUNCTION: fn_17989
+int CItemInfoMgr::LuaAddItemIsCostume(lua_State* state) {
+  if (lua_type(state, -1) != LUA_TBOOLEAN) {
+    lua_pushboolean(state, 0);
+    lua_pushstring(state, FormatItemInfoMessage("2nd argment is must boolean").c_str());
+  } else if (!lua_isnumber(state, -2)) {
+    lua_pushboolean(state, 0);
+    lua_pushstring(state, FormatItemInfoMessage("1st argment is must number").c_str());
+  } else {
+    int id = static_cast<int>(lua_tonumber(state, -2));
+    bool isCostume = lua_toboolean(state, -1) != 0;
+    g_itemInfoMgr->m_items[id].isCostume = isCostume;
+    lua_pushboolean(state, 1);
+    lua_pushstring(state, FormatItemInfoMessage("good").c_str());
+  }
+  return 2;
+}
+
+// OFFSET: 0x00AE0FA0
+// FUNCTION: fn_17990
+int CItemInfoMgr::LuaAddItemPackageID(lua_State* state) {
+  if (!lua_isnumber(state, -2)) {
+    lua_pushboolean(state, 0);
+    lua_pushstring(state, FormatItemInfoMessage("1st argment is must number").c_str());
+  } else if (!lua_isnumber(state, -1)) {
+    lua_pushboolean(state, 0);
+    lua_pushstring(state, FormatItemInfoMessage("2nd argment is must number").c_str());
+  } else {
+    int id = static_cast<int>(lua_tonumber(state, -2));
+    int packageId = static_cast<int>(lua_tonumber(state, -1));
+    g_itemInfoMgr->m_items[id].packageId = packageId;
+    lua_pushboolean(state, 1);
+    lua_pushstring(state, FormatItemInfoMessage("good").c_str());
+  }
+  return 2;
+}
+
+// OFFSET: 0x00AE10E0
+// FUNCTION: fn_17991
+int CItemInfoMgr::LuaAddItemUnidentifiedDesc(lua_State* state) {
+  if (!lua_isstring(state, -1)) {
+    lua_pushboolean(state, 0);
+    lua_pushstring(state, FormatItemInfoMessage("2nd argment is must string").c_str());
+  } else if (!lua_isnumber(state, -2)) {
+    lua_pushboolean(state, 0);
+    lua_pushstring(state, FormatItemInfoMessage("1st argment is must number").c_str());
+  } else {
+    int id = static_cast<int>(lua_tonumber(state, -2));
+    std::string line = lua_tostring(state, -1);
+    g_itemInfoMgr->m_items[id].unidentifiedDescription.push_back(line);
+    lua_pushboolean(state, 1);
+    lua_pushstring(state, FormatItemInfoMessage("good").c_str());
+  }
+  return 2;
+}
diff --git a/Source/Contents/Items/ItemInfoMgr.h b/Source/Contents/Items/ItemInfoMgr.h
new file mode 100644
index 00000000..a0e0dd64
--- /dev/null
+++ b/Source/Contents/Items/ItemInfoMgr.h
@@ -0,0 +1,76 @@
+#ifndef RAGNAROK_SOURCE_CONTENTS_ITEMS_ITEMINFOMGR_H
+#define RAGNAROK_SOURCE_CONTENTS_ITEMS_ITEMINFOMGR_H
+
+#include <map>
+#include <string>
+#include <vector>
+
+class ITEM_DESC;
+struct lua_State;
+
+// VTABLE: vt_01615
+class CItemInfoMgr {
+public:
+  // VTABLE: vt_01614
+  class lcData {
+  public:
+    // INLINED
+    lcData() : slotCount(0), classNum(0), isCostume(0), effectId(0), packageId(0) {
+    }
+    // INLINED
+    virtual ~lcData() {
+    }
+
+    /* 0004 */ std::string unidentifiedDisplayName;
+    /* 001C */ std::string unidentifiedResourceName;
+    /* 0034 */ std::vector<std::string> unidentifiedDescription;
+    /* 0040 */ std::string identifiedDisplayName;
+    /* 0058 */ std::string identifiedResourceName;
+    /* 0070 */ std::vector<std::string> identifiedDescription;
+    /* 007C */ int slotCount;
+    /* 0080 */ int classNum;
+    /* 0084 */ int isCostume;
+    /* 0088 */ int effectId;
+    /* 008C */ int packageId;
+  };
+
+  // INLINED
+  CItemInfoMgr() : m_isValid(true) {
+  }
+  // INLINED
+  virtual ~CItemInfoMgr() {
+  }
+
+  static bool Create();
+  static void Destroy();
+  static const char* GetFileName();
+  static int LuaAddItem(lua_State* state);
+  static int LuaAddItemEffectInfo(lua_State* state);
+  static int LuaAddItemIdentifiedDesc(lua_State* state);
+  static int LuaAddItemIsCostume(lua_State* state);
+  static int LuaAddItemPackageID(lua_State* state);
+  static int LuaAddItemUnidentifiedDesc(lua_State* state);
+
+  // INLINED
+  void SetUnidentifiedName(int id, std::string displayName, std::string resourceName) {
+    this->m_items[id].unidentifiedDisplayName = displayName;
+    this->m_items[id].unidentifiedResourceName = resourceName;
+  }
+  // INLINED
+  void SetIdentifiedName(int id, std::string displayName, std::string resourceName) {
+    this->m_items[id].identifiedDisplayName = displayName;
+    this->m_items[id].identifiedResourceName = resourceName;
+  }
+
+  int IsCostume(int id);
+  int GetEffectId(int id);
+  int GetPackageId(int id);
+  void SetItemInfo(std::map<int, ITEM_DESC>& descriptions) const;
+
+  /* 0004 */ bool m_isValid;
+  /* 0008 */ std::map<int, lcData> m_items;
+};
+
+extern CItemInfoMgr* g_itemInfoMgr;
+
+#endif
diff --git a/data/compile.json b/data/compile.json
index 70f48879..8b885af2 100644
--- a/data/compile.json
+++ b/data/compile.json
@@ -399,6 +399,7 @@
   "Source/Contents/Items/ChangeMaterialMgr.cpp": 4,
   "Source/Contents/Items/ItemDescription.cpp": 4,
   "Source/Contents/Items/ItemInfo.cpp": 4,
+  "Source/Contents/Items/ItemInfoMgr.cpp": 4,
   "Source/Contents/Items/ItemLink.cpp": 4,
   "Source/Contents/Items/ItemNaming.cpp": 4,
   "Source/Contents/Items/ItemResources.cpp": 4,