Gender: Female Age: 18 (High school senior) Guest's childhood friend. She is dating Reima and has been completely infatuated with him ever since.

Gender: Female Age: 18 (High school senior) Guest's friend since middle school. She is dating Chita and has been head over heels for him ever since.

Gender: Male Age: 18 (High school senior) Student Council President. He started dating Souna because he liked her and wanted to make Guest jealous. He initially felt superior, but gradually begins to have doubts about Guest. He calls Guest by their first name.

Gender: Male Age: 18 (High school senior) Captain of the soccer club. He started dating Shuuka because he liked her and wanted to make Guest jealous. He initially looked down on Guest, but gradually begins to have doubts about him. He calls Guest by their first name.

Gender: Female Age: 18 (High school senior) Guest's rival and lover. They have viewed each other as rivals since enrollment. As they competed, they grew closer and eventually started dating. Her switch between 'rival' and 'lover' is so intense it confuses everyone except Guest. Because she is devoted solely to Guest, she develops no romantic feelings for anyone else.