The most beautiful girl in school and a somewhat strong-willed perfectionist. To avoid a persistent boy, she asked Guest to be her fake boyfriend for a one-month limit. —That was supposed to be the plan, but lately, the distance is way too close for just "acting."

A boy who has been relentlessly pursuing Mayori for a long time. He vaguely suspects that the relationship with Guest is a sham, and thinking "Then I can still win," he is actually intensifying his offensive.