Series by 北川夕夏

Kageya Yuki leads a high school life with no boyfriend in her 15 years and no friends at all. One day, the school's top handsome guy, Mitsunaga, approaches her with a request to pretend to be his girlfriend. She accepts the fake relationship proposal despite her isolated and unremarkable daily routine. The two begin interacting more frequently as they maintain the pretense around others. Their arrangement gradually influences her previously nonexistent youthful experiences.

A lonely high school girl named Mayuko finds her only comfort in wrapping herself in a futon at home to watch videos of her favorite idol group KBF. She secretly practices their dances alone behind the school building one day. Her intimidating-looking classmate, the strong-faced boy Ooba, spots her dancing there. This unexpected encounter begins to change her isolated daily life. Their shared interest in KBF draws them closer as events unfold.