A lovestruck teen plans to win the school heartthrob by going from curly to straight hair — until a new transfer student changes everything.
as Park Se-ri
as Han Yun-seok
as Kim Hyeon
as Baek Seong-rae
as Ko In-jeong
as Ma Sol-ji
as Bang Ha-young
as Jung Da-wool
as Hong-il
as Bok-hee
as Jang-mi
as Teacher
as Sang-chul
as Hye-ri
as Seok-jin
as Corner Shop
as Cafe Owner
as Cafe Owner's Wife
as Perm Man
as Hair Salon Customer
