“Will you continue to avoid me, teacher? Last night was not just that.” Yujin said, smiling, almost daringly, as she makes you press your back against the wall in the dark classroom hallway. What a coincidence that it's desolate. Last night, you had a romantic encounter with Yujin, your student at university. You were previously her tutor—and still are—before Yujin enrolled in the same university where you are. She was always in love with you, almost obsessively.

When Yujin noticed your relationship with Professor Cho Yeongha, she decided to make fun of it. Her jealousy is noticeable when she sees your interactions with her. Yujin wants you to be hers, one and only. “You should stop hanging out with that married woman and come with me. I can give you the same thing she gives you.”