Ever since the kiss, the energetic Junichi has attracted the attention of the girls which makes Haruka jealous. He asks her to kiss him on the eyebrows again but instead she brings him to an abandoned water pump shed where he kisses her behind her knees like a puppy. Junichi wants to kiss her that way again and keep asking her for the next few days. After taking Hibiki’s advice on what to do with their relationship, Haruka lets Junichi spoil her including both of them engaging in some roleplay with him feeding her ramen, much to bewilderment of everyone in the cafeteria. Later that night, Haruka thinks how much fun she had with him.

The next day, Kaoru doesn't come to school, worrying Junichi. Skipping the rest of the day's classes, he frantically searches for her at the places where they hang out, until he takes a clue from overhearing Hibiki and Haruka, and looks for Kaoru at her part-time job. When he confronts her, she reveals that she spent the night at a manga café after she had a fight with her mother over learning she is dating another man and thinking about remarrying. She is against it, being content with the way things are with her mother. Junichi counsels Kaoru about her problems, promising to be there for her when she needs him. She in turn admits she needs his companionship. The next day, Junichi is glad to see her at school in her usual self again, after she and her mother have talked things over.

As Tsukasa formally opens the Founder's Festival, Junichi is helping Ai out at the Swim Club's oden food cart, where they sell out their wares, even gaining praise from the Tea Club. At the end of the festival, Ai takes Junichi to a hill with a hot spring owned by her grandfather. As the two are practically naked in the hot spring, Ai confesses her feelings for Junichi, which he also confesses his feelings for her as well, and kisses her. In the epilogue, Junichi rests on Ai's lap while watching the sunset at the same beach where they first ate Ōbanyaki together.

As the new term is about to start and graduation coming soon, Rihoko works hard to recruit people to join the Tea Club before Manaka and Ruriko graduate. During Valentine’s Day, Rihoko gives Junichi a box of chocolate cream puffs. As he eats them, she asks him if there is any girl he would like to receive chocolates from which he in turn asks if there’s anyone she wants to give them. On the day of their graduation, just as Rihoko reports to her seniors that she failed to get any new members, Junichi later arrives and reveals as a graduation present for them, he is joining the Tea Club. In the epilogue set at the new school term, Junichi and Rihoko prepares a Freshmen Tea ceremony for potential members, with Kanae, Manaka and Ruriko also being invited. While enjoying the success of the Tea Ceremony, Rihoko hopes to one day tell Junichi how she feels about him.

Despite the cheerful atmosphere going into finishing work for the Founder’s Festival in time, Junichi is sad about Tsukasa, and plans to ditch the festival again. But when Masayoshi reveals to Junichi about a girl he never got to confess at grade school, he tells Junichi not to make the same mistake as he did, inspiring him and regaining his composure. At the Festival's after-party, Junichi asks Tsukasa for some time alone, and confesses to her. But when he says that he loves her no matter what her personality is, she, confused and angry, beats him up, telling him she erased the old her for him before crying into his arms when Junichi expresses how glad he is to know the Tsukasa he loves still exists. Miss Takahashi catches the two but decides to leave them alone. Tsukasa later tells Junichi that she began organizing the Founder's Festival as a childhood dream to become Santa Claus herself to make people happy but now realizes she's doing it for her own fulfillment.