diff --git a/include/ki/protocol/dml/Message.h b/include/ki/protocol/dml/Message.h
new file mode 100644
index 0000000..397b848
--- /dev/null
+++ b/include/ki/protocol/dml/Message.h
@@ -0,0 +1,38 @@
+#pragma once
+#include "../../util/Serializable.h"
+#include "../../dml/Record.h"
+#include <iostream>
+
+namespace ki
+{
+namespace protocol
+{
+namespace dml
+{
+	class Message : public util::Serializable
+	{
+	public:
+		Message(uint8_t service_id = 0, uint8_t type = 0);
+		virtual ~Message() = default;
+
+		uint8_t get_service_id() const;
+		void set_service_id(uint8_t service_id);
+
+		uint8_t get_type() const;
+		void set_type(uint8_t type);
+
+		ki::dml::Record &get_record();
+		const ki::dml::Record &get_record() const;
+		void set_record(const ki::dml::Record &record);
+
+		void write_to(std::ostream &ostream) const final;
+		void read_from(std::istream &istream) final;
+		size_t get_size() const final;
+	private:
+		uint8_t m_service_id;
+		uint8_t m_type;
+		ki::dml::Record *m_record;
+	};
+}
+}
+}
\ No newline at end of file
diff --git a/include/ki/protocol/dml/MessageBuilder.h b/include/ki/protocol/dml/MessageBuilder.h
new file mode 100644
index 0000000..2b2e134
--- /dev/null
+++ b/include/ki/protocol/dml/MessageBuilder.h
@@ -0,0 +1,38 @@
+#pragma once
+#include "Message.h"
+#include <string>
+
+namespace ki
+{
+namespace protocol
+{
+namespace dml
+{
+	class MessageBuilder
+	{
+	public:
+		MessageBuilder(uint8_t service_id = 0, uint8_t type = 0);
+
+		MessageBuilder &set_service_id(uint8_t service_id);
+		MessageBuilder &set_message_type(uint8_t type);
+		MessageBuilder &use_template_record(const ki::dml::Record &record);
+
+		template <typename ValueT>
+		MessageBuilder &set_field_value(std::string name, ValueT value)
+		{
+			auto *field = m_message->get_record().get_field<ValueT>(name);
+			if (!field)
+			{
+				// TODO: Exceptions
+			}
+			field->set_value(value);
+			return *this;
+		}
+
+		Message *get_message() const;
+	private:
+		Message *m_message;
+	};
+}
+}
+}
\ No newline at end of file
diff --git a/include/ki/protocol/dml/MessageManager.h b/include/ki/protocol/dml/MessageManager.h
new file mode 100644
index 0000000..be3281e
--- /dev/null
+++ b/include/ki/protocol/dml/MessageManager.h
@@ -0,0 +1,40 @@
+#pragma once
+#include "MessageModule.h"
+#include "MessageBuilder.h"
+#include "../../dml/Record.h"
+#include <string>
+
+namespace ki
+{
+namespace protocol
+{
+namespace dml
+{
+	class MessageManager
+	{
+	public:
+		MessageManager();
+		~MessageManager();
+
+		static MessageManager &get_singleton();
+
+		const MessageModule &load_module(std::string filepath);
+		const MessageModule &get_module(uint8_t service_id) const;
+		const MessageModule &get_module(std::string protocol_type) const;
+
+		MessageBuilder &build_message(uint8_t service_id, uint8_t message_type) const;
+		MessageBuilder &build_message(uint8_t service_id, std::string message_name) const;
+		MessageBuilder &build_message(std::string service_type, uint8_t message_type) const;
+		MessageBuilder &build_message(std::string service_type, std::string message_name) const;
+
+		const Message *from_binary(std::istream &istream);
+	private:
+		static MessageManager *g_instance;
+
+		MessageModuleList m_modules;
+		MessageModuleServiceIdMap m_service_id_map;
+		MessageModuleProtocolTypeMap m_protocol_type_map;
+	};
+}
+}
+}
diff --git a/include/ki/protocol/dml/MessageModule.h b/include/ki/protocol/dml/MessageModule.h
new file mode 100644
index 0000000..137cc42
--- /dev/null
+++ b/include/ki/protocol/dml/MessageModule.h
@@ -0,0 +1,51 @@
+#pragma once
+#include "MessageTemplate.h"
+#include <cstdint>
+#include <string>
+#include <vector>
+#include <map>
+
+namespace ki
+{
+namespace protocol
+{
+namespace dml
+{
+	class MessageModule
+	{
+	public:
+		MessageModule(uint8_t service_id, std::string protocol_type);
+		~MessageModule();
+
+		uint8_t get_service_id() const;
+		void set_service_id(uint8_t service_id);
+
+		std::string get_protocol_type() const;
+		void set_protocol_type(std::string protocol_type);
+
+		std::string get_protocol_desription() const;
+		void set_protocol_description(std::string protocol_description);
+
+		const MessageTemplate &add_message_template(std::string name, uint8_t type,
+			ki::dml::Record *record);
+		const MessageTemplate &get_message_template(uint8_t type);
+		const MessageTemplate &get_message_template(std::string name);
+
+		MessageBuilder &build_message(uint8_t message_type) const;
+		MessageBuilder &build_message(std::string message_name) const;
+	private:
+		uint8_t m_service_id;
+		std::string m_protocol_type;
+		std::string m_protocol_description;
+
+		std::vector<MessageTemplate *> m_templates;
+		std::map<std::string, MessageTemplate *> m_message_name_map;
+		std::map<uint8_t, MessageTemplate *> m_message_type_map;
+	};
+
+	typedef std::vector<MessageModule *> MessageModuleList;
+	typedef std::map<uint8_t, MessageModule *> MessageModuleServiceIdMap;
+	typedef std::map<std::string, MessageModule *> MessageModuleProtocolTypeMap;
+}
+}
+}
diff --git a/include/ki/protocol/dml/MessageTemplate.h b/include/ki/protocol/dml/MessageTemplate.h
new file mode 100644
index 0000000..ba8b744
--- /dev/null
+++ b/include/ki/protocol/dml/MessageTemplate.h
@@ -0,0 +1,35 @@
+#pragma once
+#include "../../dml/Record.h"
+#include "MessageBuilder.h"
+#include <string>
+
+namespace ki
+{
+namespace protocol
+{
+namespace dml
+{
+	class MessageTemplate
+	{
+	public:
+		MessageTemplate(std::string name, uint8_t type, ki::dml::Record *record);
+		~MessageTemplate();
+
+		std::string get_name() const;
+		void set_name(std::string name);
+
+		uint8_t get_type() const;
+		void set_type(uint8_t type);
+
+		const ki::dml::Record &get_record() const;
+		void set_record(ki::dml::Record *record);
+
+		MessageBuilder &build_message();
+	private:
+		std::string m_name;
+		uint8_t m_type;
+		ki::dml::Record *m_record;
+	};
+}
+}
+}
\ No newline at end of file