diff --git a/include/UECS/RTDCmptTraits.h b/include/UECS/RTDCmptTraits.h
index ac75fef..8c140cc 100644
--- a/include/UECS/RTDCmptTraits.h
+++ b/include/UECS/RTDCmptTraits.h
@@ -18,56 +18,33 @@ namespace Ubpa {
 	public:
 		static constexpr size_t default_alignment = alignof(std::max_align_t);
 
-		static RTDCmptTraits& Instance() noexcept {
-			static RTDCmptTraits instance;
-			return instance;
-		}
+		inline static RTDCmptTraits& Instance() noexcept;
 
 		// neccessary
-		RTDCmptTraits& RegisterSize(CmptType type, size_t size) {
-			sizeofs[type] = size;
-			return *this;
-		}
+		inline RTDCmptTraits& RegisterSize(CmptType type, size_t size);
 
 		// optional
-		RTDCmptTraits& RegisterAlignment(CmptType type, size_t alignment) {
-			alignments[type] = alignment;
-			return *this;
-		}
+		inline RTDCmptTraits& RegisterAlignment(CmptType type, size_t alignment);
 
 		// optional
-		RTDCmptTraits& RegisterDefaultConstructor(CmptType type, std::function<void(void*)> f) {
-			default_constructors[type] = std::move(f);
-			return *this;
-		}
+		inline RTDCmptTraits& RegisterDefaultConstructor(CmptType type, std::function<void(void*)> f);
 
 		// optional
-		RTDCmptTraits& RegisterCopyConstructor(CmptType type, std::function<void(void*, void*)> f) {
-			copy_constructors[type] = std::move(f);
-			return *this;
-		}
+		inline RTDCmptTraits& RegisterCopyConstructor(CmptType type, std::function<void(void*, void*)> f);
 
 		// optional
-		RTDCmptTraits& RegisterMoveConstructor(CmptType type, std::function<void(void*, void*)> f) {
-			move_constructors[type] = std::move(f);
-			return *this;
-		}
+		inline RTDCmptTraits& RegisterMoveConstructor(CmptType type, std::function<void(void*, void*)> f);
 
 		// optional
-		RTDCmptTraits& RegisterDestructor(CmptType type, std::function<void(void*)> f) {
-			destructors[type] = std::move(f);
-			return *this;
-		}
-
-		RTDCmptTraits& Deregister(CmptType type) {
-			sizeofs.erase(type);
-			alignments.erase(type);
-			default_constructors.erase(type);
-			copy_constructors.erase(type);
-			move_constructors.erase(type);
-			destructors.erase(type);
-			return *this;
-		}
+		inline RTDCmptTraits& RegisterDestructor(CmptType type, std::function<void(void*)> f);
+
+		inline RTDCmptTraits& Deregister(CmptType type) noexcept;
+
+		template<typename Cmpt>
+		void Register();
+
+		template<typename Cmpt>
+		void Deregister();
 
 	private:
 		friend class RTSCmptTraits;
@@ -76,6 +53,7 @@ namespace Ubpa {
 
 		RTDCmptTraits() = default;
 
+
 		std::unordered_map<CmptType, size_t> sizeofs;
 		std::unordered_map<CmptType, size_t> alignments;
 		std::unordered_map<CmptType, std::function<void(void*)>> default_constructors; // dst <- src
@@ -84,3 +62,5 @@ namespace Ubpa {
 		std::unordered_map<CmptType, std::function<void(void*)>> destructors;
 	};
 }
+
+#include "detail/RTDCmptTraits.inl"
diff --git a/include/UECS/detail/RTDCmptTraits.inl b/include/UECS/detail/RTDCmptTraits.inl
new file mode 100644
index 0000000..6d92bba
--- /dev/null
+++ b/include/UECS/detail/RTDCmptTraits.inl
@@ -0,0 +1,99 @@
+#pragma once
+
+#include "../RTDCmptTraits.h"
+
+namespace Ubpa {
+	inline RTDCmptTraits& RTDCmptTraits::Instance() noexcept {
+		static RTDCmptTraits instance;
+		return instance;
+	}
+
+	// neccessary
+	inline RTDCmptTraits& RTDCmptTraits::RegisterSize(CmptType type, size_t size) {
+		sizeofs[type] = size;
+		return *this;
+	}
+
+	// optional
+	inline RTDCmptTraits& RTDCmptTraits::RegisterAlignment(CmptType type, size_t alignment) {
+		alignments[type] = alignment;
+		return *this;
+	}
+
+	// optional
+	inline RTDCmptTraits& RTDCmptTraits::RegisterDefaultConstructor(CmptType type, std::function<void(void*)> f) {
+		default_constructors[type] = std::move(f);
+		return *this;
+	}
+
+	// optional
+	inline RTDCmptTraits& RTDCmptTraits::RegisterCopyConstructor(CmptType type, std::function<void(void*, void*)> f) {
+		copy_constructors[type] = std::move(f);
+		return *this;
+	}
+
+	// optional
+	inline RTDCmptTraits& RTDCmptTraits::RegisterMoveConstructor(CmptType type, std::function<void(void*, void*)> f) {
+		move_constructors[type] = std::move(f);
+		return *this;
+	}
+
+	// optional
+	inline RTDCmptTraits& RTDCmptTraits::RegisterDestructor(CmptType type, std::function<void(void*)> f) {
+		destructors[type] = std::move(f);
+		return *this;
+	}
+
+	template<typename Cmpt>
+	void RTDCmptTraits::Register() {
+		static_assert(std::is_copy_constructible_v<Cmpt>, "<Cmpt> must be copy-constructible");
+		static_assert(std::is_move_constructible_v<Cmpt>, "<Cmpt> must be move-constructible");
+		static_assert(std::is_destructible_v<Cmpt>, "<Cmpt> must be destructible");
+
+		constexpr CmptType type = CmptType::Of<Cmpt>();
+
+		sizeofs[type] = sizeof(Cmpt);
+		alignments[type] = alignof(Cmpt);
+
+		if constexpr (!std::is_trivially_destructible_v<Cmpt>) {
+			destructors[type] = [](void* cmpt) {
+				reinterpret_cast<Cmpt*>(cmpt)->~Cmpt();
+			};
+		}
+		if constexpr (!std::is_trivially_move_constructible_v<Cmpt>) {
+			move_constructors[type] = [](void* dst, void* src) {
+				new(dst)Cmpt(std::move(*reinterpret_cast<Cmpt*>(src)));
+			};
+		}
+		if constexpr (!std::is_trivially_copy_constructible_v<Cmpt>) {
+			copy_constructors[type] = [](void* dst, void* src) {
+				new(dst)Cmpt(*reinterpret_cast<Cmpt*>(src));
+			};
+		}
+	}
+
+	template<typename Cmpt>
+	void RTDCmptTraits::Deregister() {
+		constexpr CmptType type = CmptType::Of<Cmpt>();
+
+		sizeofs.erase(type);
+		alignments.erase(type);
+
+		if constexpr (!std::is_trivially_destructible_v<Cmpt>)
+			destructors.erase(type);
+		if constexpr (!std::is_trivially_move_constructible_v<Cmpt>)
+			move_constructors.erase(type);
+		if constexpr (!std::is_trivially_copy_constructible_v<Cmpt>)
+			copy_constructors.erase(type);
+	}
+
+	inline RTDCmptTraits& RTDCmptTraits::Deregister(CmptType type) noexcept {
+		sizeofs.erase(type);
+		alignments.erase(type);
+		default_constructors.erase(type);
+		copy_constructors.erase(type);
+		move_constructors.erase(type);
+		destructors.erase(type);
+		return *this;
+	}
+}
diff --git a/include/UECS/detail/RTSCmptTraits.h b/include/UECS/detail/RTSCmptTraits.h
index 9df5394..8ed6c7a 100644
--- a/include/UECS/detail/RTSCmptTraits.h
+++ b/include/UECS/detail/RTSCmptTraits.h
@@ -49,7 +49,7 @@ namespace Ubpa {
 
 		template<typename Cmpt>
 		void Deregister();
-		inline void Deregister(CmptType type);
+		inline void Deregister(CmptType type) noexcept;
 
 	private:
 		std::unordered_map<CmptType, size_t> sizeofs;
diff --git a/include/UECS/detail/RTSCmptTraits.inl b/include/UECS/detail/RTSCmptTraits.inl
index 6a6aa2f..ce136e6 100644
--- a/include/UECS/detail/RTSCmptTraits.inl
+++ b/include/UECS/detail/RTSCmptTraits.inl
@@ -71,7 +71,7 @@ namespace Ubpa {
 			move_constructors[type] = move_constructor_target->second;
 	}
 
-	inline void RTSCmptTraits::Deregister(CmptType type) {
+	inline void RTSCmptTraits::Deregister(CmptType type) noexcept {
 		sizeofs.erase(type);
 		alignments.erase(type);
 		copy_constructors.erase(type);