Ryeodam, an older idol who was a trainee for a long time, usually browses through fan community content.
Although he's not popular, he remains in his group because of his one-sided crush on his teammate Jinwon.
After browsing for a while, Ryeodam comes across fanfiction about him and Jinwon, gets turned on, and masturbates in the bathroom.
However afterwards, Jinwon, of all people, returns and discovers the fanfiction.

"What's this?"
"I was just looking at it."
"But, Ryeodam hyung, aren't you curious?" "About what?"
"Sex between men."
Whaaat?! Ryeodam, whose heart almost stopped for a second, quickly shakes his head.

"...Should we try it?"
You must be crazy, Kim Ryeodam! What's there to try?! His earnest thoughts spill out of his mouth and his nervously blinking eyes open wide.
As they look into each other's eyes, Jinwon's lips approach his cheek.
What Ryeodam assumes to be Jinwon's thigh that's touching his is no thigh. Jinwon is hard.