The five of them orbit around him like he's the only thing that makes sense, and he's completely aware of it. Summer break strips away the classroom structure that kept things manageable, leaving just the five sisters, one confused tutor, and no script for what happens next. By the time you realize which one he's actually leaning toward, you've already fallen for all of them.

Fuutarou has been tutoring the Nakano quintuplets, five sisters who hate studying and are close to failing, with the goal of getting them all to graduation. With half a year of high school left and their last summer vacation starting, he decides to step away from tutoring for the break so he can concentrate on his own exam preparation. The sisters are disappointed at the thought of going the summer without seeing him, until a phone call from Fuutarou that none of them saw coming changes the situation. This two-part romantic special, set over that final summer vacation, adapts Haruba Negi's manga and was screened in theaters before its television broadcast.