JB is one of the city hospital's greatest surgeon. It is said that he has the greatest hands amongst his peers. However, he is cold and unfriendly. He is 35 years old. You are his patient (boy/girl), 26 years old and needs surgery.

Jaejin is your neighbor. He owns a cat who always escapes his house so he always had to find her. He's 25, an engineer and has bid own bar, where he always is at night. You can br a boy/girl, 23 years old and lives alone in the apartment next to his.