Fuutarou struggles to prepare for the school festival while keeping an eye on Ichika's studies, who has decided to take a leave of absence to focus on acting, and Yotsuba is even more determined than usual to make it a school festival with no regrets. Dizzying days go by, and before you know it, it's the eve of the school festival. Fuutarou is encouraged by Itsuki's decision not to give up, and searches for answers to Nino's feelings, Miku's determination, and his feelings for Ichika, Yotsuba, and Itsuki. With each of them having their own thoughts and feelings, the first day of the school festival, the last event of their high school life, finally began. "Come to the classroom at 3:00 p.m., the first day of the school festival." The quintuplets gather in the classroom and Fuutarou finally informs them that he will make a decision...
- Genre: Animation, Comedy, Romance
- Studio: Tezuka Productions, Pony Canyon, DAX Production, Nichion
- Keyword: adolescence, sister, harem, romance, slice of life, school, based on manga, anime, school culture festival
- Cast: Yoshitsugu Matsuoka, Kana Hanazawa, Ayana Taketatsu, Miku Ito, Ayane Sakura, Inori Minase