After Haruka and the others note Shizuku Minami behaving oddly, Kotone Nida, who is currently living with her, states Shizuku is mad at her because she kissed her on the cheek whilst she was sleeping. After speaking with Haruka and Yuu on the matter, Shizuku meets up with Kotone, stating she got mad because she felt Kotone was only staying with her because it was convenient. Kotone states she likes staying with Shizuku because of her, and the two share a mutual kiss, which Haruka and Yuu happen to come across. Later, the girls get together to try and help Yuu study for her exams instead of relying on other people's notes. After the usual methods fail due to Yuu's tendency to fall asleep, Haruka decides to use kissing to help Yuu remember the answers she needs for the test.

With the cultural festival approaching, Haruka, Kaede, and Yuzu go to a café with Mitsuki to try and convince her to join in their class' production of Snow White. When the others arrive, Yuu displays some displeasure in having been left behind at school, due to Haruka wanting to surprise her, but the two manage to make up with each other. Later, the girls succeed in coercing Mitsuki into playing the role of Snow White, where she becomes paranoid about being kissed by Haruka during rehearsal, only to realise it was only a speech-only play.

Haruka invites Yuu to join her in attending a relative's wedding, which Yuu misinterprets as Haruka asking her to marry her. Although Yuu is disappointed that this is not the case, Haruka becomes touched by the thought of it. On Christmas Eve, Mitsuki joins Haruka and the others in visiting the Christmas lights, noticing that Haruka and Yuu seem to be shying away from each other. After Haruka and Yuu become separated from the others, Haruka reveals she had been shy to look Yuu in the face because of the strong feelings she's been having, with Yuu replying she had felt the same.

Kaede introduces Haruka and Yuu to Sumi Otokawa, who is to succeed Mitsuki as student council president, who asks for their help in deciding what to do for Mitsuki and student vice-president Rina Sakai for their graduation. The three of them decide to investigate the third years, finding them have a peculiar fondness for pudding, deciding on holding a 'bucket pudding contest'. After Sumi takes her leave, Mitsuki and Rina walk in on Haruka and Yuu kissing each other. Despite Mitsuki forbidding Haruka from kissing Yuu and having Kaede keep an eye on them, Haruka finds ways to sneak some kisses in during dance classes. Meanwhile, after speaking with Sumi, Mitsuki comes to the realization that she herself is in love with Haruka.