Yes he is Dojin's friend from before (NOT the guy who stabbed Taehee)
ahhhhhh i see THANK YOU!
He's actually Teahee's friend (not Dojin). They are classmates and they usually study together at the library.
Dojin met with him through Teahee and they became friends.
If you remember, when Teahwan found out about his brother's relationship, he kicked Dojin out of the apartment. That night Dojin slept at Yeonwu's place.
OHHHHH yes i remember now tysm for that
hey could someone give me a refresher? was yeonwoo just a random friend who we've seen before pop up here and there? he wasn't the creep who stabbed taehee right