I don't thing shyness would make someone violent for no reason. But for the sake of love i will read it
Depends on the person, it happens, my brother was like that. He was a really shy kid and then as a teenager he’d cover it up by being aggressive like telling people to eff off and getting in fights just because he wanted to avoid interactions with people, I think feeling like an outsider made him angry for no reason. He eventually made friends though and is a lot happier now.
I agreed it look so much like a rip off solo leveling especially the artstyle and the mc character's looks. I would have appreciate it more if the author just decide to make a manhua about the chinese hunter from solo leveling instead of carbon copying sung jin woo's face. I can forgive the artstyle it is better than bad art. But it give me ick to even read a manga/comic/manhwa/manhua or whatever you call it if it is a copycat. Similar genre is common having similar plot and art style and even similar character in term of looks is weird. You can at least change their looks.