The School Festival Arc is the sixteenth story arc in 5-toubun no Hanayome series. This arc is about the school festival in Fuutarou's school.
- Start of the arc: preparation for the school festival (Chapter 96)
- End of the arc: Fuutarou and Yotsuba talks about their feelings at the very end of School Festival (Chapter 114)
It's the crucial time of their high school year. Academic and youth, entrance exam and school festival, go side-by-side. "It will be the best festival ever!", Fuutarou declared. And with that, begins the last event of their year.
- Fuutarou confesses that he loves all five quints
- Ichika, Nino, Miku, and Yotsuba kisses Fuutarou
- Fuutarou comes into the infirmary, Yotsuba's designated room.
- Fuutarou and Yotsuba talks about their feelings at the very end of School Festival
- School Festival Arc is the longest arc in 5-toubun no Hanayome series.