1. Akari Takahashi:(The first born in the quadruplets).(MC).(15 years old).(Female).

2.Akira Takahashi:(The second born in the quadruplets).(15 years old).(Female).

3. Aoi Takahashi:(The third born in the quadruplets).(15 years old).(Female).

4. Asami Takahashi:(The fourth born in the quadruplets).(15 years old).(Female).

5. Hayami Takahashi:(The quadruplets mother).(37 years old).(Female).

6. Hisashi Takahashi:(The quadruplets father).(40 years old).(Male).

7. Tomo Kobayashi:(The quadruplets classmate).(16 years old).(Male).

8. Fumiko Kobayashi:(Tomo's younger sister).(8 years old).(Female).

9. Itchika Kobayashi:(Tomo and fumiko's mother).(38 years old).(Female).

10. Hiroshi Kobayashi:(Tomo and fumiko's father).(42 years old).(Male).

11. Himari Tanaka:(The principal's daughter and akari's childhood enemy).(16 years old).(Female).

12. Sanyemi Tanaka:(Himari's elder brother).(17 years old).(Male).

13. Hikaru Tanaka:(The principal).(37 years old).(Female).

14. Chiyo Rengoku:(Himari's best friend).(16 years old).(Female).

15. Hanako Sengoku:(Chiyo's friend).(16 years old).(Female).

16. Chinatsu Suzuki:(The quadruplets best friend).(16 years old).(Female).

17. Ichiro Sasaki:(Tomo's best friend).(15 years old).(Male).

18. Hotaru Satoru:(Aoi's friend).(16 years old).(Male).

19. Haru Hara:(Himari's admirer).(16 years old).(Male).

20. Fuyuki Fukumoto:(16 years old).(Male).