Main Cast:

Bang Riley-        Main girl, roommate and best friend of Hyemi. Ulzzang Kim Shin Yeong

Su Hyemi-          Main girl, roommate and best friend of Riley.   Ulzzang Do Hwae Ji

Do Kyungsoo-   Main boy Hyemi's love interest, roommate and best friend of Jongup. Picture

Moon Jongup-   Main boy Riley's love interest, roommate and best friend of Kyungsoo. Picture

Extended Cast:

Park Chanyeol-  Best friends with Baekhyun, roommates with Hyemi, Riley and Baekhyun. Picture

Byun Baekhyun- Best friends with Chanyeol, roommates with Hyemi Riley and Chanyeol. Picture

Choi Kan-             Roommates with Kyungsoo, Jongup and Sungyeol. Brother like feelings with Riley (protective). Picture

Lee Sungyeol-    Roommates with Kyungsoo, Jongup and Kan. Prank buddies with Hyemi. (Difficult relationship). Picture

Lee Sunjong-      Roommate with Ren, lives next door to Hyemi and Riley. Picture

Choi Ren-             Roommate with Sungjong, lives next door to Hyemi and Riley. Picture

Kim Himchan-    Dorm leader lives near Hyemi and Riley. Picture

Bang YongGuk-  Riley's older brother. Picture

Kim Hyunjoong- Hyemi's older brother. Picture

Lee Hoya-            Riley's Ex boyfriend friends with Sungyeol. Picture

Woo Kevin-          Hyemi's ex boyfriend lives next door but doesn't remember her. Picture

Cameos by various people

Teachers:

Yoo Jaesuk-      Principal Picture

Kang Hodong-  Vice Principal Picture

Kim Jaejoong-  School Doctor Jaejoong

Kim Yoona-        Homeroom Teacher Picture

Shin Hyesung-  Singing Teacher Picture

Jung Rain-         Dancing Teacher Picture

Hyun Bin-           Acting Teacher Picture

Haha-                 Assistant Acting Teacher Picture