|Physical and Vital Statistics|
|Relatives|| Seiji Komori |
Tsukushi Komori (小森 筑紫; Komori Tsukushi), is a human. He is the brother of Yui, and he's also adopted by Seiji Komori. The childhood friend of Amane.
Amane met him when she was sixteen. He was eight years old, and he was playing in the Church's garden when Amane met him for the first time.