Park Sunghoon-11th grade student, a good student,he is 17.He is tall (6'0 tall) with light ash hair,dark brown eyes,and pale skin.He himself is quite cold and sarcastic,relatively serious, bad boy, but loves to joke.Not so jealous like Niki.Niki often makes him annoying. Nishimura Riki(Niki)-9th grade student,he studies averagely,he is 15. His height is on par with Sunghoon's, with dark hair, and he is Japanese who transferred to a Korean school.Teasing,clingy,funny,flirty,childish