IU as Sheena Kim Santiago
Kim Kibum as Matthew Castillo
Suho EXO as TJ Villafuerte
Kim Soo Hyun as Zeaven Santiago
Jung ll Woo as Shiro Monteverde
Kim Bum as EJ Mendoza
Suzy Bae as Crystal Domingo
So Hee as Elina Domingo
Jessica SNSD as Maureen Lopez