random, but what is up with Kang? I'm kinda curious about his story

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He is the protagonist of other story called Love lessons and the second part is Love business. The novel is in booktoki 466 but it hasn’t been translated.

Moon Kang, who attended the university freshman orientation as an X-man, meets Park Moo-jin, a returning student, there. Kang likes Kang's friend Mo Yoo-jin, but decides to help Mu-jin, who is bad at love. However, at some point, the atmosphere between Mu-jin and Kang changes strangely, and Kang's ex-boyfriend Yoon Jae-seok appears in front of them...