Wit's manga / #School Life(167)

A chance I read this before... Shirakawa is the top fighter at his school, but has little motivation for it, even with his two side kicks egging him on. Even when the new teacher turns out to be an alumni and never defeated in a fight, he still shows little interest. Until he sees an old video of sensei fighting and thinks he looks beautiful. After that, he sticks to sensei like glue

Kang Jun has a crush on his friend Junwoo, but hides his feelings under a mask, understanding it will never come to pass. But then Junwoo starts paying attention to a new pretty male transfer student. Jun knows that he only bullies the new student because he likes him and doesn't know how to express his feelings. Sitting there and feeling sorry for himself, the new student, and the general way things are going, he starts hanging out with a student he doesn't understand and claims to hate instead of his crush and his messy messy love life

Luke Davis discovers that his girlfriend is showing interest in another guy when she wants him to dress like a nerd in the bedroom. He finds the guy she's been thinking about and follows him around to see if they are in a realtionship or not. But Andrew isn't quite so oblivious as you'd expect and confronts Luke about his behavior. They do not get off on the right foot...

Same family as Night of Muheon, but Seongjoo is the best friend to the MC in this one.