Yoshimatsu Hotaka serves as the president of the manga club. He remains diligent with his studies and club duties, despite a habit of skipping class activities. While he appears to be a typical honor student, he is actually overwhelmed by melancholy and haunted by past misfortunes. Meanwhile, he ensures he admires and watches Awaya Nika, the beautiful, bright, radiant, and super cheerful female ace of the swimming club. He is content to continue his high school days in this manner until the P.E. teacher forces him to take a private swimming lesson to make up for all the missed classes; a development that would forever change the dynamic between him and Awaya. What is the cause of Hotaka's bitterness? What does he want to hide? How does Awaya Nika have more in common with him than he could ever imagine?