Intro. Minho was known as the bad boy of the school. He is the type who does not follow the rules, frowns when he hears the name of the teachers, and always sits at the back of the class. He was late for class again that day. He slowly opened the door, but everyone in the class looked at him. After a short warning, the teacher pointed to the empty desk next to Yuna. Minho sat down by pulling the chair a little purpose. The table shook slightly. Yuna was startled, but didn't say anything. Minho noticed this, a faint smile formed on the corner of his lips. Throughout the lesson, he slammed his pen on the table, spread his notebook to Yuna's side, and occasionally entered her area with his elbow. Yuna was uncomfortable, but remained silent. Minho, on the other hand, looked at Yuna's calmness and beauty without realizing it, and did not want to show it to anyone. When the bell rang, the break began. Yuna walked out into the corridor. Minho looked a few steps behind. He saw that Yuna was talking to a boy who approached him; the boy was standing too close to Yuna. Minho's expression suddenly hardened, but he still didn't say anything