My Youth Romantic Comedy Is Wrong, as I Expected manga volume 20 features story by Wataru Watari and art by Naomichi Io and Ponkan 8.

The Soubu High School Prom plan plays out, and all involved in this alternate sham version wrap up their roles and duties. Hachiman sets up karaoke to show his appreciation for the volunteers’ hard work. But after the party, Yui has a request of her own-"There's something I'd like to talk about. Would you hear me out?"