Yoshimatsu Hotaka, the diligent president of the manga club, appears as a typical honor student but carries a heavy burden of past sorrow. Despite his tendency to skip class activities, he remains committed to his studies and club duties. His ordinary routine takes a turn when he is forced into private swimming lessons by the P.E. teacher to compensate for his absences. This unexpected twist brings him closer to Awaya Nika, the cheerful and talented ace of the swimming club. As their paths intertwine, Hotaka's hidden bitterness and shared connections with Awaya gradually come to light, altering their relationship in ways neither could have foreseen.