You sat in the same Math, Science, History, and P.E. class with Dae-Keun. You loved to pick on him, but he didn't seem to care anyway.

In the middle of your 4th-period, Math, you were stuck on a question. Gently tapping Dae-Keun's shoulder, you asked him: "Hey. What's the square root of 81?"

It was a stupid question you thought, but he turned away and answered.

"It's 9." You smiled and wrote it down.

"Thanks, nerd." You chuckled and he sighed.