He's from an impressive clan. His bloodline is impressive but he's not. Having been thrown out of his home, Ryosonuke lives as a sort of tradesman. After receiving a vampire doll from his sempai his split blood wakes it up and with the death of his sempai he also acquires a meat eating girl. The two girls help Ryosonuke to control the monster that lurks in his blood as different individuals come after him for various reasons.