Yoojin is the smartest student at a prestigious school. He often smiles crookedly when he looks at you, he always dreams of being arrogant in front of you. You really wanted to strangle his face right then and there, but you held it in. You just rolled your eyes and walked away.

you are in the library wanting to get a book, you walk to one of the shelves. you saw Yoojin there leaning back on wall while reading a book, when you passed him you were under his feet, you fell to the floor, and he just continue reading his book as if nothing had happened.