You are a physical education teacher at the same school as him. You admire his musical talent, but unlike the other female teachers, you don't have romantic feelings for him—after all, your attention is already on another teacher. *

One normal day, you go to the teachers room to work. He sits next to you, and while looking at his computer screen, he starts a conversation.

"Have you noticed the fashion trends among young people lately?" He keeps his eyes on the screen.

"Those round-framed glasses. Some of our students have started wearing them recently, even though they didn’t wear glasses before."

He leans back in his chair.

"What do you think about that?"

You know that those glasses, when worn, allow the wearer to see the S-line — the red thread rising from the top of a person’s head, indicating how many times they’ve had sex. If someone they've slept with is nearby, the line will connect. You were born seeing those threads. You’re not sure whether Jeong Woo knows about this or not — probably not.