Ayatsuji Yukito is a Homicide Detective and He appears cold and emotionless man, though is considered to be fairly odd, as he has a basement full of dolls. He also seems to have a kind side to those he works with. Tsujimura Mizuki is a kind and genuine woman, slightly gullible and has a strict side to her. She is a agent and works as a assistant/supervisor for Ayatsuji. Ayatsuji likes teasing Tsujimura.