A classroom seat change leads to an unexpected confession that slowly brings two classmates closer.

After Asamiya’s unexpected confession, Mayama begins to grow closer to him and realize that his feelings are genuine. As he also breaks down the walls between himself and Asamiya’s friends, Mayama finds himself increasingly drawn to him. However, a painful experience from his past still keeps him from fully embracing this new love.

While preparing for the cultural festival, Mayama and Asamiya spend their first day off together. As their relationship continues to deepen, Mayama begins to feel increasingly pressured.

After Asamiya's confession, Mayama reveals a past trauma that keeps him from trusting in love. Understanding his fears, Asamiya promises to wait as long as it takes for an answer. The two grow closer while preparing for the school festival, but an unexpected illness on the morning of the event threatens their plans.

Despite having a fever, Mayama decides to take part in the school festival. With the support of his friends and Asamiya, he realizes that he has finally found a place where he belongs and that his feelings for Asamiya have grown into love. But just as he gathers the courage to respond to Asamiya’s confession, Asamiya surprises him by saying, “You don’t have to like me.”

Heartbroken after misinterpreting Asamiya's words, Mayama tries to move on by throwing himself into a summer job. Dragged along to an awkward group blind date, he can't stop thinking about him. Meanwhile, Asamiya realizes the mistake of keeping his distance and rushes to find Mayama, pulling him away from the gathering to finally confess his true romantic feelings.

Now officially dating, Asamiya and Mayama enjoy the sweet days of summer, but hectic schedules with studies and part-time jobs keep driving them apart. During the night of the local festival, lingering insecurities and unexpected run-ins put Mayama's feelings to the test as past wounds resurface. With Asamiya by his side, he must confront his own doubts so the two can finally take the next step together.

Now dating as summer break ends, Asamiya and Mayama find that keeping their relationship a secret at school brings unexpected doubts. Ready to face their insecurities, they decide to come clean to their closest friends and take a definitive step forward together.