diff --git a/Client/src/asteroid/begin_play.cpp b/Client/src/asteroid/begin_play.cpp
index 3e60a29..d587f49 100644
--- a/Client/src/asteroid/begin_play.cpp
+++ b/Client/src/asteroid/begin_play.cpp
@@ -2,8 +2,14 @@
 
 #include "vulkan_engine/vulkan/engine.h"
 
+
 void BeginPlay(veng::Engine& engine) {
-  veng::Model* const player = engine.SpawnModel("player", "player");
+  std::random_device rd;
+  std::mt19937 gen = std::mt19937(rd());
+  std::uniform_real_distribution<float> jitterDist = std::uniform_real_distribution<float>(-2, 2);
+
+  veng::Model* const player = engine.SpawnLifedModel("player", "player", -1);
+  player->position = glm::vec3(jitterDist(gen), jitterDist(gen), 0.f);
   player->scale = glm::vec3(.02f);
   player->colision = true;
   player->OnColision = [](veng::Model* self, veng::Model* other) {
@@ -15,16 +21,17 @@ void BeginPlay(veng::Engine& engine) {
 
     other->colision = false;
     other->visible = false;
+    other->shouldBeDestroyed = true;
   };
   veng::Model* const player_flame =
-      engine.SpawnModel("player_flame", "player_flame");
+      engine.SpawnLifedModel("player_flame", "player_flame", -1);
   player_flame->scale = player->scale;
   player_flame->colision = false;
   player_flame->networkReplicated = false;
 
   spdlog::info("player addr: {}", (void*)player);
 
-  veng::Model* const other_player = engine.SpawnModel("player", "other_player");
+  veng::Model* const other_player = engine.SpawnLifedModel("player", "other_player", -1);
   other_player->position = glm::vec3(1.f, 0.f, 0.f);
   other_player->scale = glm::vec3(.02f);
   other_player->colision = true;
@@ -37,34 +44,35 @@ void BeginPlay(veng::Engine& engine) {
 
     other->colision = false;
     other->visible = false;
+    other->shouldBeDestroyed = true;
   };
 
   spdlog::info("other player addr: {}", (void*)other_player);
 
-  veng::Model* const camera_lag = engine.SpawnModel("", "camera_lag");
+  veng::Model* const camera_lag = engine.SpawnLifedModel("", "camera_lag", -1);
   camera_lag->colision = false;
   camera_lag->position = player->position;
 
-  veng::Model* const background = engine.SpawnModel("", "background");
+  veng::Model* const background = engine.SpawnLifedModel("", "background", -1);
   background->colision = false;
   background->position = {background->position.x, background->position.y, 30.f};
   background->scale *= 100;
   background->networkReplicated = false;
 
   veng::Model* const background0 =
-      engine.SpawnModel("background", "background0");
+      engine.SpawnLifedModel("background", "background0", -1);
   background0->scale = background->scale;
   background0->networkReplicated = false;
   veng::Model* const background1 =
-      engine.SpawnModel("background", "background1");
+      engine.SpawnLifedModel("background", "background1", -1);
   background1->scale = background->scale;
   background1->networkReplicated = false;
   veng::Model* const background2 =
-      engine.SpawnModel("background", "background2");
+      engine.SpawnLifedModel("background", "background2", -1);
   background2->scale = background->scale;
   background2->networkReplicated = false;
   veng::Model* const background3 =
-      engine.SpawnModel("background", "background3");
+      engine.SpawnLifedModel("background", "background3", -1);
   background3->scale = background->scale;
   background3->networkReplicated = false;
 }
diff --git a/Client/src/asteroid/main.cpp b/Client/src/asteroid/main.cpp
index 86d5461..9154b38 100644
--- a/Client/src/asteroid/main.cpp
+++ b/Client/src/asteroid/main.cpp
@@ -28,26 +28,29 @@ std::int32_t main(std::int32_t argc, gsl::zstring* argv) {
 
   addr.set(AF_INET6, "::1", 9010);
 
-  Network::Socket sock;
   Network::TCPSocket TCPSock;
   TCPSock.init(AF_INET6);
-  sock = TCPSock;
-  if (sock.connect(addr) == INVALID_SOCKET) {
+  if (TCPSock.connect(addr) == INVALID_SOCKET) {
     spdlog::error("connect()");
     std::exit(EXIT_FAILURE);
   }
-  iocp.registerTCPSocket(sock, 16 * 1024);
+  iocp.registerTCPSocket(TCPSock, 16 * 1024);
 
-  while (iocp.GetRecvedBytes(sock.sock) < 6);
+  while (iocp.GetRecvedBytes(TCPSock.sock) < 6);
   std::vector<char> header_serialized(6);
-  iocp.recv(sock, header_serialized);
+  iocp.recv(TCPSock, header_serialized);
   Packet::Header header;
   header.Deserialize(header_serialized);
-  while (iocp.GetRecvedBytes(sock.sock) < header.body_length);
+  while (iocp.GetRecvedBytes(TCPSock.sock) < header.body_length);
   std::vector<char> data(header.body_length);
-  iocp.recv(sock, data);
+  iocp.recv(TCPSock, data);
   ::memcpy(&CLIENTID, data.data(), 1); //id 받기
 
+  header.opcode = Packet::Opcode::CLIENTID;
+  header.body_length = 0;
+  header_serialized = header.Serialize();
+  iocp.send(TCPSock, header_serialized);
+
   const veng::GlfwInitialization _glfw;
 
   veng::Window window("Vulkan Engine", {800, 600});
@@ -70,7 +73,7 @@ std::int32_t main(std::int32_t argc, gsl::zstring* argv) {
     glfwPollEvents();
 
     engine.Update();
-    engine.NetUpdate(std::make_shared<Network::Socket>(sock));
+    engine.NetUpdate(std::make_shared<Network::Socket>(TCPSock));
   }
 
   return EXIT_SUCCESS;
diff --git a/Client/src/asteroid/tick.cpp b/Client/src/asteroid/tick.cpp
index 3a2bf7e..3a3d90d 100644
--- a/Client/src/asteroid/tick.cpp
+++ b/Client/src/asteroid/tick.cpp
@@ -31,17 +31,27 @@ void Tick(veng::Engine& engine, std::float_t delta_time) {
       (-stiffness * displacement - damping * camera_lag->linear_velocity) *
       delta_time;
 
+  camera_lag->linear_velocity = glm::vec3(0);
+  camera_lag->position = player->position;
+
   engine.view = glm::lookAt(
       glm::vec3(camera_lag->position.x, camera_lag->position.y, -5.f),
       camera_lag->position, glm::vec3(0.f, -1.f, 0.f));
 
+  static bool w_laststate = false;
   if (glfwGetKey(engine.vulkan_graphics->window->GetHandle(), GLFW_KEY_W) ==
       GLFW_PRESS) {
     player->linear_acceleration = glm::normalize(forward) * 10.f;
     player_flame->visible = true;
+    player->needsUpdate = true;
+    w_laststate = true;
   } else {
     player->linear_acceleration = forward * .0f;
     player_flame->visible = false;
+    if (w_laststate) {
+      player->needsUpdate = true;
+      w_laststate = false;
+    }
   }
 
   if (bullet_cooldown > std::numeric_limits<std::float_t>::epsilon()) {
@@ -60,21 +70,33 @@ void Tick(veng::Engine& engine, std::float_t delta_time) {
       bullet->owner = player;
       bullet->scale = player->scale;
       bullet->colision = true;
+      bullet->networkReplicated = true;
+      bullet->needsUpdate = true;
 
       spdlog::info("bullet address: {}", (void*)bullet);
     }
   }
+
+  static bool ad_laststate = false;
   if (glfwGetKey(engine.vulkan_graphics->window->GetHandle(), GLFW_KEY_A) ==
       GLFW_PRESS) {
     right = player->rotation * glm::vec3(0, 0, 1);
     player->angular_velocity = right * 6.f;
+    player->needsUpdate = true;
+    ad_laststate = true;
   } else if (glfwGetKey(engine.vulkan_graphics->window->GetHandle(),
                         GLFW_KEY_D) == GLFW_PRESS) {
     right = player->rotation * glm::vec3(0, 0, 1);
     player->angular_velocity = right * -6.f;
+    player->needsUpdate = true;
+    ad_laststate = true;
   } else {
     right = player->rotation * glm::vec3(0, 0, 1);
     player->angular_velocity = right * 0.f;
+    if (ad_laststate) {
+      player->needsUpdate = true;
+      ad_laststate = false;
+    }
   }
 
   player_flame->rotation = player->rotation;
diff --git a/Server/src/server.cpp b/Server/src/server.cpp
index f7b3e10..600b389 100644
--- a/Server/src/server.cpp
+++ b/Server/src/server.cpp
@@ -1,5 +1,6 @@
-#include <chrono>
-
+#include "glfw/glfw_initialization.h"
+#include "glfw/glfw_monitor.h"
+#include "glfw/glfw_window.h"
 #include "socket/iocp.h"
 #include "socket/packet.h"
 #include "socket/tcp_socket.h"
@@ -15,19 +16,37 @@ std::uint8_t CLIENTID = 0;
 
 std::unordered_map<utils::Snowflake, veng::Model> MODELS;
 std::mutex MODELS_MUTEX;
-std::vector<Network::TCPSocket> CLIENTS;
+std::vector<std::pair<Network::TCPSocket, double>> CLIENTS;
 std::mutex CLIENTS_MUTEX;
 
+void recv_fully(Network::IOCP* iocp, Network::TCPSocket& sock,
+                std::vector<char>& buffer) {
+  size_t total_received = 0;
+  size_t expected = buffer.size();
+
+  while (total_received < expected) {
+    if (total_received != 0)
+      Sleep(100);  // 너무 빨리 재시도해서 큐가 채워질 틈이 없는 듯?
+    if (sock.sock == 0) return;
+    std::vector<char> temp(expected - total_received);
+
+    size_t received = iocp->recv(sock, temp);
+
+    std::copy(temp.begin(), temp.begin() + received,
+              buffer.begin() + total_received);
+    total_received += received;
+  }
+}
+
 void EchoClient(utils::ThreadPool* tp, Network::IOCP* iocp,
-                Network::TCPSocket NewSock, Network::Address NewAddr) {
-  while (iocp->GetRecvedBytes(NewSock.sock) < 6);
+                Network::TCPSocket* NewSock, Network::Address NewAddr) {
+  if (NewSock->sock == 0) return;
   std::vector<char> recv_data(6);
-  iocp->recv(NewSock, recv_data);
+  recv_fully(iocp, *NewSock, recv_data);
   Packet::Header header;
   header.Deserialize(recv_data);
   recv_data.resize(header.body_length);
-  while (iocp->GetRecvedBytes(NewSock.sock) < header.body_length);
-  iocp->recv(NewSock, recv_data);
+  recv_fully(iocp, *NewSock, recv_data);
 
   switch (header.opcode) {
     case Packet::Opcode::UPDATEMODEL: {
@@ -35,24 +54,97 @@ void EchoClient(utils::ThreadPool* tp, Network::IOCP* iocp,
       model.Deserialize(recv_data);
 
       std::lock_guard lock(MODELS_MUTEX);
-      if (MODELS.find(model.ID) == MODELS.end())
-        spdlog::info("model received: {}", model.ID.snowflake);
-      MODELS[model.ID] = std::move(model);
-    }
-      break;
+      auto ID = model.ID;
+      if (MODELS.find(ID) == MODELS.end())
+        spdlog::info("model received: {}:{}", model.name, ID.snowflake);
+      MODELS[ID] = std::move(model);
+      MODELS[ID].needsUpdate = true;
+    } break;
     default:
       spdlog::error("unknown data type");
   }
 
-  // iocp->send(NewSock, recv_data);
-
   tp->enqueueJob(EchoClient, iocp, NewSock, NewAddr);
 }
 
+void ClientRefresher(utils::ThreadPool* tp, Network::IOCP* iocp) {
+  static auto last_all_updated = glfwGetTime();
+  static auto last_frame_time_ = glfwGetTime();
+  auto current_time = glfwGetTime();
+  bool needs_all_update = false;
+  if (current_time - last_all_updated >= 100) {
+    needs_all_update = true;
+    last_all_updated = glfwGetTime();
+  }
+  auto delta_time = current_time - last_frame_time_;
+  last_frame_time_ = current_time;
+
+  for (auto it = CLIENTS.begin(); it != CLIENTS.end();) {
+    if (it->first.sock == 0) {
+      it = CLIENTS.erase(it);
+    } else {
+      ++it;
+    }
+  }
+
+  for (auto it = MODELS.begin(); it != MODELS.end();) {
+    auto& model = it->second;
+
+    if (std::abs(model.lifespan + 1.f) <
+        std::numeric_limits<float>::epsilon()) {
+      ++it;
+      continue;
+    }
+
+    if (model.lifespan <= 0.f) {
+      it = MODELS.erase(it);
+      continue;
+    }
+
+    if (model.shouldBeDestroyed) {
+      it = MODELS.erase(it);
+      continue;
+    }
+
+    model.lifespan -= delta_time;
+    ++it;
+  }
+
+  for (auto& client : CLIENTS) {
+    if (client.first.sock == 0) continue;
+    for (auto& model : MODELS) {
+      if (model.second.name == "camera_lag") continue;
+      std::vector<char> send_data;
+      model.second.Update(delta_time + (client.second / 2));
+      auto model_serialized = model.second.Serialize();
+      Packet::Header header;
+      header.opcode = Packet::Opcode::UPDATEMODEL;
+      header.body_length = model_serialized.size();
+      auto header_serialized = header.Serialize();
+      send_data.insert(send_data.end(), header_serialized.begin(),
+                       header_serialized.end());
+      send_data.insert(send_data.end(), model_serialized.begin(),
+                       model_serialized.end());
+      if (!model.second.needsUpdate && !needs_all_update) {
+        continue;
+      }
+      model.second.needsUpdate = false;
+      if (client.first.send(send_data.data(), send_data.size(), 0) == -1) {
+        client.first.sock = 0;
+      }
+      spdlog::info("updated: {}", model.second.name);
+    }
+  }
+
+  tp->enqueueJob(ClientRefresher, iocp);
+}
+
 int main(int argc, char* argv[]) {
   Network::WSAManager wsamanager;
+  const veng::GlfwInitialization _glfw;
 #if !defined(NDEBUG)
-  utils::setDefaultLogger(spdlog::level::level_enum::debug, "log.log", 1024, 2);
+  utils::setDefaultLogger(spdlog::level::level_enum::debug, "log.log",
+                          1024 * 1024, 2);
 #endif
   utils::ThreadPool tp(0);
   Network::IOCP iocp;
@@ -75,6 +167,8 @@ int main(int argc, char* argv[]) {
     std::exit(EXIT_FAILURE);
   }
 
+  tp.enqueueJob(ClientRefresher, &iocp);
+
   while (true) {
     Network::TCPSocket NewSock;
     Network::Address NewAddr;
@@ -86,15 +180,22 @@ int main(int argc, char* argv[]) {
 
     Packet::Header header;
     header.opcode = Packet::Opcode::CLIENTID;
-    header.body_length = 8;
+    header.body_length = 9;
     auto packet = header.Serialize();
-    packet.resize(packet.size() + 8);
+    packet.resize(packet.size() + 9);
     std::lock_guard lock(CLIENTS_MUTEX);
-    CLIENTS.push_back(NewSock);
     std::uint8_t client_id = CLIENTS.size() - 1;
     ::memcpy(packet.data() + 6, &client_id, 1);
-    iocp.send(NewSock, packet);
 
-    tp.enqueueJob(EchoClient, &iocp, NewSock, NewAddr);
+    std::double_t timestamp = glfwGetTime();
+
+    ::memcpy(packet.data() + 7, &timestamp, 8);
+    iocp.send(NewSock, packet);
+    std::vector<char> header_buf(6);
+    recv_fully(&iocp, NewSock, header_buf);
+    auto ping = glfwGetTime() - timestamp;
+    CLIENTS.emplace_back(std::move(NewSock), ping);
+
+    tp.enqueueJob(EchoClient, &iocp, &CLIENTS.back().first, NewAddr);
   }
 }
diff --git a/impl/socket/iocp.cpp b/impl/socket/iocp.cpp
index 8d6c82e..d83c23e 100644
--- a/impl/socket/iocp.cpp
+++ b/impl/socket/iocp.cpp
@@ -255,6 +255,8 @@ void IOCP::iocpWatcher_(utils::ThreadPool* IOCPThread) {
     ::WSARecv(recv_data->socket->sock, &recv_data->wsabuf, 1, &recvbytes,
               &flags, &recv_data->overlapped, NULL);
   } else {  // WRITE 시, 무시한다.
+    spdlog::debug("writed {} bytes to {}", cbTransfrred,
+                  (std::string)(data->socket->remoteAddr));
     delete data;
   }
   IOCPThread->enqueueJob(
diff --git a/impl/socket/socket.cpp b/impl/socket/socket.cpp
index 816388c..e3716fc 100644
--- a/impl/socket/socket.cpp
+++ b/impl/socket/socket.cpp
@@ -28,6 +28,7 @@ void Socket::destruct() {
   ::close(sock);
 #endif
   valid_ = false;
+  sock = 0;
 }
 
 Socket::operator SOCKET() {
diff --git a/impl/vulkan_engine/asset/object/model.cpp b/impl/vulkan_engine/asset/object/model.cpp
index 2e192ab..5790bc8 100644
--- a/impl/vulkan_engine/asset/object/model.cpp
+++ b/impl/vulkan_engine/asset/object/model.cpp
@@ -18,16 +18,31 @@ void Append(std::vector<char>& buffer, const T& value) {
   buffer.insert(buffer.end(), data, data + sizeof(T));
 }
 
+void Append(std::vector<char>& buffer, const std::string& value) {
+  size_t length = value.size();
+  Append(buffer, length);
+  buffer.insert(buffer.end(), value.begin(), value.end());
+}
+
 template <typename T>
 void Read(const std::vector<char>& buffer, size_t& offset, T& out) {
   std::memcpy(&out, buffer.data() + offset, sizeof(T));
   offset += sizeof(T);
 }
 
+void Read(const std::vector<char>& buffer, size_t& offset, std::string& out) {
+  size_t length = 0;
+  Read(buffer, offset, length);
+  out.assign(buffer.data() + offset, length);
+  offset += length;
+}
+
 std::vector<char> Model::Serialize() {
   std::vector<char> buffer;
 
   Append(buffer, ID);
+  Append(buffer, name);
+  Append(buffer, asset_name);
 
   Append(buffer, position);
   Append(buffer, linear_velocity);
@@ -54,6 +69,8 @@ void Model::Deserialize(std::vector<char> data) {
   size_t offset = 0;
 
   Read(data, offset, ID);
+  Read(data, offset, name);
+  Read(data, offset, asset_name);
 
   Read(data, offset, position);
   Read(data, offset, linear_velocity);
diff --git a/impl/vulkan_engine/vulkan/engine.cpp b/impl/vulkan_engine/vulkan/engine.cpp
index 9ddbe3e..4da34ee 100644
--- a/impl/vulkan_engine/vulkan/engine.cpp
+++ b/impl/vulkan_engine/vulkan/engine.cpp
@@ -36,40 +36,12 @@ const Model* Engine::GetStaticModel(std::string name) {
   return nullptr;
 }
 
-Model* Engine::SpawnModel(std::string asset_name, std::string name) {
-  if (asset_name == "") {
-    Model model_to_spawn(nullptr);
-    model_to_spawn.visible = false;
-    models_[name] = std::move(model_to_spawn);
-    return &models_[name];
-  }
-
-  if (models_.find(name) == models_.end()) {
-    Model model_to_spawn(*GetStaticModel(asset_name));
-    models_[name] = std::move(model_to_spawn);
-    return &models_[name];
-  }
-
-  std::uint32_t i = 0;
-  for (i = 0; i < std::numeric_limits<std::uint32_t>::max();) {
-    if (models_.find(name + std::to_string(i)) == models_.end()) {
-      Model model_to_spawn(*GetStaticModel(asset_name));
-      models_[name + std::to_string(i)] = std::move(model_to_spawn);
-      break;
-    }
-    i++;
-  }
-
-  if (i == std::numeric_limits<std::uint32_t>::max() - 1)
-    return nullptr;
-  else
-    return &models_[name + std::to_string(i)];
-}
-
 Model* Engine::SpawnLifedModel(std::string asset_name, std::string name,
                                std::float_t lifespan) {
   if (asset_name == "") {
     Model model_to_spawn(nullptr);
+    model_to_spawn.asset_name = "";
+    model_to_spawn.name = name;
     model_to_spawn.visible = false;
     model_to_spawn.lifespan = lifespan;
     models_[name] = std::move(model_to_spawn);
@@ -78,6 +50,8 @@ Model* Engine::SpawnLifedModel(std::string asset_name, std::string name,
 
   if (models_.find(name) == models_.end()) {
     Model model_to_spawn(*GetStaticModel(asset_name));
+    model_to_spawn.asset_name = asset_name;
+    model_to_spawn.name = name;
     model_to_spawn.lifespan = lifespan;
     models_[name] = std::move(model_to_spawn);
     return &models_[name];
@@ -87,6 +61,8 @@ Model* Engine::SpawnLifedModel(std::string asset_name, std::string name,
   for (i = 0; i < std::numeric_limits<std::uint32_t>::max();) {
     if (models_.find(name + std::to_string(i)) == models_.end()) {
       Model model_to_spawn(*GetStaticModel(asset_name));
+      model_to_spawn.asset_name = asset_name;
+      model_to_spawn.name = name + std::to_string(i);
       model_to_spawn.lifespan = lifespan;
       models_[name + std::to_string(i)] = std::move(model_to_spawn);
       break;
@@ -152,6 +128,11 @@ void Engine::Update() {
         continue;
       }
 
+      if (model.shouldBeDestroyed) {
+        it = models_.erase(it);
+        continue;
+      }
+
       model.lifespan -= delta_time;
 
       models.push_back(&model);
@@ -178,6 +159,7 @@ void Engine::NetworkUpload(std::shared_ptr<Network::Socket> sock) {
   std::vector<char> data;
   for (auto& it : models_) {
     if (!it.second.networkReplicated) continue;
+    if (!it.second.needsUpdate) continue;
 
     Packet::Header header;
     header.opcode = Packet::Opcode::UPDATEMODEL;
@@ -187,19 +169,123 @@ void Engine::NetworkUpload(std::shared_ptr<Network::Socket> sock) {
 
     data.insert(data.end(), header_serialized.begin(), header_serialized.end());
     data.insert(data.end(), model.begin(), model.end());
+    it.second.needsUpdate = false;
   }
   iocp_->send(*sock, data);
 }
 
+int recv_partial(Network::IOCP* iocp, Network::Socket& sock,
+                 std::vector<char>& buffer) {
+  size_t total_received = 0;
+  size_t expected = buffer.size();
+
+  while (total_received < expected) {
+    if (total_received != 0)
+      Sleep(100);  // 너무 빨리 재시도해서 큐가 채워질 틈이 없는 듯?
+    if (sock.sock == 0) return 0;
+    std::vector<char> temp(expected - total_received);
+
+    size_t received = iocp->recv(sock, temp);
+    if (received == 0) return 0;
+
+    std::copy(temp.begin(), temp.begin() + received,
+              buffer.begin() + total_received);
+    total_received += received;
+  }
+
+  return total_received;
+}
+
+void recv_fully(Network::IOCP* iocp, Network::Socket& sock,
+                std::vector<char>& buffer) {
+  size_t total_received = 0;
+  size_t expected = buffer.size();
+
+  while (total_received < expected) {
+    if (total_received != 0)
+      Sleep(100);  // 너무 빨리 재시도해서 큐가 채워질 틈이 없는 듯?
+    if (sock.sock == 0) return;
+    std::vector<char> temp(expected - total_received);
+
+    size_t received = iocp->recv(sock, temp);
+
+    std::copy(temp.begin(), temp.begin() + received,
+              buffer.begin() + total_received);
+    total_received += received;
+  }
+}
+
 void Engine::ResponseToServerAndRefresh(std::shared_ptr<Network::Socket> sock) {
-  while (iocp_->GetRecvedBytes(sock->sock) < 6);
+  if (sock->sock == 0) return;
   std::vector<char> recv_data(6);
-  iocp_->recv(*sock, recv_data);
+  if (recv_partial(iocp_, *sock, recv_data) == 0) return;
   Packet::Header header;
   header.Deserialize(recv_data);
   recv_data.resize(header.body_length);
-  while (iocp_->GetRecvedBytes(sock->sock) < header.body_length);
-  iocp_->recv(*sock, recv_data);
+  recv_fully(iocp_, *sock, recv_data);
+
+  switch (header.opcode) {
+    case Packet::Opcode::UPDATEMODEL: {
+      veng::Model model;
+      model.Deserialize(recv_data);
+
+      bool found = false;
+      for (auto& it : models_) {
+        if (it.second.ID == model.ID) {
+          it.second.position = model.position;
+          it.second.linear_velocity = model.linear_velocity;
+          it.second.linear_acceleration = model.linear_acceleration;
+
+          it.second.rotation = model.rotation;
+          it.second.angular_velocity = model.angular_velocity;
+          it.second.angular_acceleration = model.angular_acceleration;
+
+          it.second.scale = model.scale;
+          it.second.transform = model.transform;
+
+          it.second.original_offset = model.original_offset;
+          it.second.radius = model.radius;
+          it.second.lifespan = model.lifespan;
+
+          it.second.visible = model.visible;
+          it.second.colision = model.colision;
+
+          spdlog::info("model updated: {}", model.name);
+          spdlog::info("model pos: ({},{},{})", model.position.x,
+                       model.position.y, model.position.z);
+          found = true;
+          break;
+        }
+      }
+
+      if (!found) {
+        auto spawnedModel =
+            SpawnLifedModel(model.asset_name, model.name, model.lifespan);
+        spawnedModel->ID = model.ID;
+        spawnedModel->position = model.position;
+        spawnedModel->linear_velocity = model.linear_velocity;
+        spawnedModel->linear_acceleration = model.linear_acceleration;
+
+        spawnedModel->rotation = model.rotation;
+        spawnedModel->angular_velocity = model.angular_velocity;
+        spawnedModel->angular_acceleration = model.angular_acceleration;
+
+        spawnedModel->scale = model.scale;
+        spawnedModel->transform = model.transform;
+
+        spawnedModel->original_offset = model.original_offset;
+        spawnedModel->radius = model.radius;
+        spawnedModel->lifespan = model.lifespan;
+
+        spawnedModel->visible = model.visible;
+        spawnedModel->colision = model.colision;
+        spawnedModel->networkReplicated = false;
+        spdlog::info("model spawned: {}", model.ID.snowflake);
+      }
+    } break;
+    default:
+      spdlog::error("unknown data type");
+  }
 }
 
 }  // namespace veng
diff --git a/include/socket/socket.h b/include/socket/socket.h
index 2c8c650..017f64f 100644
--- a/include/socket/socket.h
+++ b/include/socket/socket.h
@@ -39,7 +39,7 @@ class Socket {
   std::mutex readMutex;
   std::mutex writeMutex;
 
- protected:
+private:
   bool valid_ = false;
 };
 
diff --git a/include/vulkan_engine/asset/object/model.h b/include/vulkan_engine/asset/object/model.h
index 472621e..8c55ca6 100644
--- a/include/vulkan_engine/asset/object/model.h
+++ b/include/vulkan_engine/asset/object/model.h
@@ -18,7 +18,8 @@ struct Model {
   ~Model();
 
   Model(const Model& other)
-      : vertices(other.vertices),
+      : asset_name(other.asset_name),
+        vertices(other.vertices),
         vertex_buffer(other.vertex_buffer),
         indices(other.indices),
         index_buffer(other.index_buffer),
@@ -39,12 +40,15 @@ struct Model {
         visible(other.visible),
         colision(other.colision),
         networkReplicated(other.networkReplicated) {
+    name = "_" + other.name;
     ID = utils::GenerateID(CLIENTID);
     graphics_ = nullptr;
   }
 
   Model(Model&& other)
-      : vertices(std::move(other.vertices)),
+      : name(other.name),
+        asset_name(other.asset_name),
+        vertices(std::move(other.vertices)),
         vertex_buffer(std::move(other.vertex_buffer)),
         indices(std::move(other.indices)),
         index_buffer(std::move(other.index_buffer)),
@@ -77,6 +81,8 @@ struct Model {
     if (this != &other) {
       ID = other.ID;
       ::memset(&other.ID, 0, 8);
+      name = other.name;
+      asset_name = other.asset_name;
       vertices = std::move(other.vertices);
       vertex_buffer = std::move(other.vertex_buffer);
       indices = std::move(other.indices);
@@ -105,6 +111,8 @@ struct Model {
     return *this;
   }
   utils::Snowflake ID;
+  std::string name;
+  std::string asset_name;
 
   std::vector<char> Serialize();
   void Deserialize(std::vector<char> data);
@@ -144,6 +152,9 @@ struct Model {
   bool visible = true;
   bool colision = false;
   bool networkReplicated = true;
+  bool shouldBeDestroyed = false;
+
+  bool needsUpdate = true;
 
  private:
   class Graphics* graphics_;
diff --git a/include/vulkan_engine/vulkan/engine.h b/include/vulkan_engine/vulkan/engine.h
index 505c3c5..23ab29f 100644
--- a/include/vulkan_engine/vulkan/engine.h
+++ b/include/vulkan_engine/vulkan/engine.h
@@ -19,7 +19,7 @@ class Engine {
   void LoadModelAsset(std::string path, std::string name);
   const Model* GetStaticModel(std::string name);
 
-  Model* SpawnModel(std::string asset_name, std::string name);
+  // 수명을 무제한으로 놓고 싶으면 lifespan을 -1으로 설정하면 됨
   Model* SpawnLifedModel(std::string asset_name, std::string name,
                          std::float_t lifespan);
   Model* GetSpawnedObject(std::string name);