Makimura Tomoki, who is passive about relationships, decides to join the school festival executive committee in order to avoid being alone in his university life. A year after that decision, when the time has come to welcome new members to the executive committee, Kimioka Misono, a kouhai who stands out among them, proactively approaches Makimura for some reason. This is a love story between a cute kouhai who is attracted to her senpai more than he had expected, and a clumsy senpai who changes under her influence.