Race: Human

Age: 17

School grade: 2nd year

Height: 158 cm

Weight: 45 kg

Blood type: O

Komori Yui is a normal girl who gets sent, by her father, to the Sakamaki brothers' house. She is a good-natured and sweet girl. She is also strong despite the horrible situation she is in and everything. Her dad works in a Church and she has the power to see ghosts.

It was Ayato who gave her the nick name "Pancake," referring to her flat chest.