星野源
Senpai (voice)

花澤香菜
The Girl with Black Hair (voice)

小清水亜美
Naoko (voice)

悠木碧
Princess Daruma (voice)

神谷浩史
Director of School Festival Operations (voice)

本多力
Bookstore Shopkeeper Gabi (voice)

吉野裕行
God of the Old Books Market (voice)

諏訪部順一
Nise-Jōgasaki (voice)

山路和弘
Todo (voice)

中井和哉
Seitarō Higuchi (voice)

麦人
Ri Haku (voice)

檜山修之
Johnny (voice)

秋山竜次
Don Underwear (voice)

新妻聖子
Kiko (voice)

中岡創一
Kōsaka (voice)

甲斐田裕子
Hanuki (voice)

原田大輔
Keifuku Electric Railway Study Group Student (voice)

島田岳洋
Sophistry Member (voice)