Iirc he got got really into his own feelings about being rejected so he decided not to put himself out there for anyone else. So this teasing is partially him being stubborn and not wanting to admit he likes Wooyeon first, partially wanting Wooyeon to be mature enough to admit his feelings and partially him just being kind of a flirtatious asshole lol
In omega complex, he’s a 1st year. him being the youngest is his main charm (the festival scene + often mentioning him being the youngest) at the end of it he mentioned he started turtoring a high schooler who he’s worried abt often, who we now know is wooyeon
Here, he’s older from a freshman to a senior, it seem he matured after his first failed crush hence the attitude changed, his old attitude wouldn’t mix well with yeon since rather than letting yeon hid for his comfort he would immediately bring it up and confront him abt it.
It’s been a while since I read it but this is what I remembered

So I've read omega complex and i wanted to know why Dohyun acts kinda different even tho he likes the bottom?
Cus in the first manwha (omega complex) he liked the bottom and was pretty much bold, but rn he seems more mysterious and just overall different
Does someone know if he has a reason or did he just change?