星野源

Senpai (voice)

Kana Hanazava

The Girl with Black Hair (voice)

Ami Koşimizu

Naoko (voice)

Aoi Yuki

Princess Daruma (voice)

Hiroşi Kamiya

Director of School Festival Operations (voice)

本多力

Bookstore Shopkeeper Gabi (voice)

吉野裕行

God of the Old Books Market (voice)

Juniçi Suvabe

Nise-Jōgasaki (voice)