The OVA picks up where the second season left Yuuta and Rikka: living together, still negotiating what that actually means, still trapped in the beautiful friction between his need for normal and her refusal to leave her chuuni world. This is the episode that proves their relationship isn't won or settled, it's a constant, exhausting, necessary dance. You've watched them circle each other through two seasons and a Christmas special; now you get to see them actually trying to move forward, which turns out to be messier and funnier and more real than any confession scene could be.

Released unaired as episode 13 with the seventh Blu-ray and DVD volume, this romantic comedy OVA begins on an ordinary school day. Rikka Takanashi catches Makoto Isshiki slipping a flash drive to Yuuta Togashi. Her friends agree Yuuta is keeping a secret, and they set out to learn what the drive holds. It turns out to contain photos of an idol Yuuta loved in middle school, and Rikka declares this a violation of their lovers' contract and insists he give it back. Still unconvinced after seeing him return it, she creeps into his room at night and finds the drive still there. After she carelessly leaves it lying around, it ends up crushed. Yuuta wants an apology, Rikka wants one from him, and neither will be the first to say sorry.