Season Regulars 14

1. 

   Ong Seong-wu

   Choi Joon-Woo

2. 

   Kim Hyang-gi

   Yoo Soo-Bin

3. 

   Shin Seung-ho

   Ma Whi-Young

4. 

   Kang Ki-young

   Oh Han-Kyeol

5. 

   Sim Yi-young

   Joon-Woo's mother

6. 

   Kim Sun-young

   Soo-Bin's mother

7. 

   Choi Jae-woong

   Choi Myeong-jun

8. 

   Moon Bin

   Jung Oh-je

9. 

   Jung Young-ju

   Park Geum-ja

10. 

    Jung Hyeon-jun

    Choi Joon-Woo (young)

11. 

    Yoo In-soo

    Yoo Pil-Sang

12. 

    Han Sung-min

    Hwang Ro Mi [Soo Bin's classmate]

13. 

    Kim Bo-yoon

    Kwon Da-hwin

14. 

    Moon Joo-yeon

    Yoon So-ye

Gastdarsteller 0

There are no cast records added to Being More Mature Than Adults at the Age of 18.

Crew 0

There are no crew records added to Being More Mature Than Adults at the Age of 18.