星野源

Senpai (voice)

Kana Hanazawa

The Girl with Black Hair (voice)

Ami Koshimizu

Naoko (voice)

Aoi Yūki

Princess Daruma (voice)

Hiroshi Kamiya

Director of School Festival Operations (voice)

本多力

Bookstore Shopkeeper Gabi (voice)

Hiroyuki Yoshino

God of the Old Books Market (voice)

Jun'ichi Suwabe

Nise-Jōgasaki (voice)

山路和弘

Todo (voice)

Kazuya Nakai

Seitarō Higuchi (voice)

麦人

Ri Haku (voice)

Nobuyuki Hiyama

Johnny (voice)