鷲尾須美は勇者である外伝 勇者行進曲

Chapters 1-6: Washio Sumi wa Yuusha de Aru Gaiden: Yuusha Koushinkyoku In this humorous, slice-of-life spin-off of Washio Sumi is a Hero, Sumi, Sonoko, and Gin set out on an adventure to return a lost puppy to its owner. Chapters 7-9: Kaettekita Washio Sumi wa Yuusha Radio Chapters 10-11: Yuusha GP "Hero Grand Prix" is a cross-over that includes the characters from Yuki Yuna is a Hero, Washio Sumi is a Hero, Nogi Wakaba is a Hero, and Shiratori Utano is a Hero.