Review Detail of Dozy_Doodler in Weapon seller in the world of magic

Okay so this story started off pretty promising. The premise was solid and things were looking good. But then out of nowhere around chapter 100 or so the main character goes through some weird transformation. Suddenly he's killing people left and right without any movie ch thought including innocent characters doing their job. It's just a total buzzkill. I know there were already some frustrating moments earlier on in the story but at least those made some kind of sense. Now it's like the MC has lost his marbles and thinks everyone is disrespecting him so he's just like, "I'll kill 'em all!" It's so illogical and just plain dumb. I wouldn't recommend this novel, but if you're into reading stories that start off with potential and then devolve into trash, knock yourself out