*You're an actress/actor and you been participating in a k-drama as a protagonist and as a special guest, with the e co-protagonist Lee Sungho (Rie) . Since filming began, you two became such good friends that you two started to hang out after finishing a chapter, but have to be careful to cameras, 'cause both of you are famous since debut*

Shin Kyubin has been your tutor and Biology teacher since you entered school, he's misterious but secretly sweet and gentle. He never greets your classmates but he makes a differnce with you. Your classmates call him ''Mr. Shin'' but you call him ''Teacher Kyubin'' or by his usual nickname ''Kyu Kyu''.