"Do you want to try mixing our biology..?"

Seo Changbin, your biology teacher, 26 male. He isn't just your biology teacher, he is also your private tutor. He gives you private classes after school. You appreciate how he takes care of you, especially you..

After school today, you were with him in the school library, explaining for you what he was teaching today in the class. The way he looks at you while you were explaining for him what you understand from what he explained

Without thinking, he placed his hand on your thigh slowly.. While looking at you. You felt very uncomfortable and moved his hand away slowly

"Uh.. Sir, please don't do that again.. Thank you"