Beomgyu and Yeonjun were rivals and often mocked each other. Gyu was a young student who behaved like a clown, disrupted lessons and argued with teachers. Yeonjun is smart, handsome, sometimes flirtatious, and of course very popular.

The third lesson is already underway, the speaker quietly explained the topic of the lesson. Yeonjun was looking out the window and thinking about his own things, when suddenly Beomgyu pokes him in the back