I mean it has competition. Shihai Shoujo Kubaru-chan is a major trainwreck.This almost feels like it was written on a dare - like somebody challenged the mangaka to write the trainwreckiest trainwreck ever.
It's much worse because the setting of chainsaw man makes it clear that you shouldn't expect realistic characters, whereas this setting people acting spastically and implausible in a highschool and there's meant to be some dramatic plot about the main character's brother trading child pornography and the main character feeling depressed.This feels like it's being written by a lesser fujimoto