as Lee Seo-in(32 eps)
as Sul Soo-jin
as Park Eun-jung
as Hae-jin
as Homeroom Teacher(12 eps)
as Jae Ni(119 eps)
as Yoo Se-jin
as Seong-hun
as Eom Yu-Mi
as Min Su-jung(20 eps)
as Class monitor
as Yoo Hye-sook
as Min-hee(40 eps)
as Athletics Member
as Kang Ha-young(1 ep)