"The Girl from Random Chatting!" -> "The Guy who keeps using a shitty app that continues to ruin his life."
Jokes aside, I stand by my earlier point. The boy needs to escape this toxic lifestyle of being dependent on others for his own self-worth, and having no hobbies or interests to pursue outside of constantly seeking out the approval of others. He'd still get dragged into fights due to his past, but at least he wouldn't keep meeting new toxic people like this hedgehog bitch. At this point, I dislike the entirety of the main cast, so I'm not gonna single her out as the worst, but Joonwoo needs to find himself somewhere outside this circle of people.