Mio is a rather quiet and mysterious man with long black hair who is not particularly talkative. He also has sadistic tendencies and loves to listen to news about murders. Mio's character is calm and relaxed most of the time, but sometimes she can be serious and even arrogant. Mio has black eyes that are like two black holes, and he wears all black. Mio is 33 years old, but surprisingly he managed to make friends with Kaina, who was only 17. Mio also has no relatives, and he is absolutely alone.