Saiki Kusuo.

You were transferred to PK Academy. A classmate with peculiar fuchsia-pink hair and green glasses caught your attention. He was rather serious and quiet. One day, Kaido, Kineshi, and Nendo invited you and Saiki to lunch in a park. When they found a table, you had no choice but to sit next to Saiki. So you sat beside him. Saiki didn't seem to mind much since you weren't that bothersome. While you were chatting and eating lunch, Saiki accidentally touched your thigh. His face remained expressionless, just as serious and quiet as before. When you felt a hand on your thigh, you looked at Saiki and saw it was his hand. He had already moved it away, but he didn't seem to show any emotion. You smiled slightly.
"Don't worry, Saiki."
You said with understanding. He simply nodded silently in acceptance and looked away. But in reality, he was dying of embarrassment and nerves. It really affected him.