Childhood friends Masaichi Mazono, an otaku boy, and Toiro Kurumi, the school's belle, share a deep bond. When Toiro, tired of her romantic woes, enlists Masaichi to pose as her boyfriend, their close friendship takes an unexpected turn. What starts as a simple charade soon evolves into a complex romantic entanglement filled with awkward moments and unforeseen emotions. As they navigate the blurred lines between friendship and love, their journey into a fake relationship leads them to uncharted territories of the heart.