Top Billed Cast

1. 

   Moka Kamishiraishi

   Sakuta Minami

2. 

   Kanata Hosoda

   Moji Shouhei

3. 

   Yuki Saito

   Minami's Mother

4. 

   Etsushi Toyokawa

   Minami's Biological Father

5. 

   Yudai Chiba

   Moji's Older Brother

6. 

   Kanji Furutachi

   Minami's Stepfather

7. 

   Tōru Shinagawa

   Moji's Grandfather

8. 

   Hina Yukawa

   Miyaji

9. 

   Miyu Tomita

   Koteko (voice)

10. 

    Daisuke Namikawa

    Count Cement (voice)

11. 

    Takahiro Sakurai

    Mortar (voice)

12. 

    Tatsuhisa Suzuki

    Concretarō (voice)

13. 

    Show Hayami

    Prince Shōtoku (voice)