上白石萌歌

Sakuta Minami

細田佳央太

Moji Shouhei

斉藤由貴

Minami's mother

豊川悦司

Minami's biological father

千葉雄大

Moji's older brother

Kanji Furutachi

Minami's stepfather

品川徹

Moji's grandfather

Hina Yukawa

Miyaji

富田美憂

Koteko (voice)

Daisuke Namikawa

Count Cement (voice)

Takahiro Sakurai

Mortar (voice)

Tatsuhisa Suzuki

Concretarō (voice)

Shō Hayami

Prince Shōtoku (voice)