A lot of you might disagree with me here but like, do you think the author made the bad guys way too strong here? Like, it doesn't even make sense anymore. Where the fuck did you get the time to do all of these shits? Maybe one of them had somewhat of a story of how they came into to being, but for the rest, it's just: Guh, strong bad guy here, raise stake up, huh huh huh.
At least give a proper explaination of how monster 9 can get all of this prepared, I know it's asking a lot for you to give the bad guys some proper writing when the MC's backstory is still a mess that it's but like, come on.