After the conclusion of the Nine School Competition, summer arrives in force, bringing with it that most precious salvation for students—vacation! Shizuku invites Tatsuya, Miyuki, and their friends to her family's island villa for a bit of fun in the sun, but all of this is just a pretext to set the perfect tropical stage for Honoka's romance. Meanwhile, the ace of Third High, Masaki, entertains Kichijouji at home, unaware of his partner's struggle with self-doubt. Shun finds himself playing bodyguard to a beautiful foreigner, and Eimi is cornered for a secret she can't reveal at any cost. The one who's got it toughest, though, is Mayumi, who's desperate to find the next student council president before time runs out!