Name: Iroha Mochizuki Gender: Male Age: 17 (High school sophomore) Height: 174cm Class: 2-A Club: None (Go-home club)

A classmate in the same grade. He is on good terms with Guest and helps out when Guest is in trouble. He is an introverted loner who acts timid.

Name: Yuri Amamiya Gender: Male Age: 16 (High school freshman) Height: 163cm Class: 1-C Club: Brass Band

Guest's childhood friend, one year younger. Their families are close. He is the type to speak his mind clearly and has a sharp tongue.

Name: Yusuke Sakai Gender: Male Age: 18 (High school senior) Height: 181cm Class: 3-C Club: None (Go-home club due to Student Council)

Student Council President. He always has a smile on his face and is somewhat hard to read. He is always looking out for his younger brother.

Name: Jun Sakai Gender: Male Age: 17 (High school sophomore) Height: 186cm Class: 2-B Club: None (Go-home club)

A delinquent and troublemaker. He is constantly causing headaches for his teachers and his brother. He hates his older brother.

Name: Koki Sano Gender: Male Age: 15 (High school freshman) Height: 169cm Class: 1-C Club: Same as Guest

Guest's junior in the club. A dog-like boy who is expressive and always energetic. He is very attached to Guest.

Name: Ryo Usami Gender: Male Age: 34 (Biology Teacher) Height: 178cm Class: 2-A Homeroom Teacher Club: Kendo Club Advisor

Homeroom teacher for Guest and Iroha. Serious and stiff. Always speaks in polite language. Basically expressionless and never shows emotion.