The Aesthetic Of Good Looking summary:

“Hyung is pretty.” Even after being warned not to, Hong Seowoo, overdoes it and gets drunk at his club’s welcoming party. The next day, he wakes up in the clubroom and realizes that not only did he miss his morning class, but while he was asleep...he’s been holding hands with a stranger, who also happens to be a man — one of the club’s new recruits and Seowoo’s junior, Baek Dohyeon. Drawn into joining the club after seeing him, Dohyeon plans on gaining Seowoo’s affections, even if it is proving to be quite the challenge.