As the school festival draws to a close, a fresh year springs forth. The Kaou-kai members, bidding adieu to their tasks at the Kaou edifice, gear up for the ultimate show, Graduation Ceremony, to express their gratitude. However, following the turmoil at the festival, Team Ootori, which has disbanded since then, is barred from participating. In the midst of these developments, Yuuta Hoshitani and his comrades come to a conclusion...