That was a very cut and dry 1/10 manga. Obviously there's legible art, ok pacing, lots of basic things where you could say it doesn't deserve the lowest score. However, knowing that this originated as a Role Play thread makes it further more ridiculous when they start referring to breaking the 4th wall and such.
Honestly, I was expecting a lot less consequence. Because so many characters get built up to basically become corpses without accomplishing a thing, and then they figuratively get spat on their corpse. They start talking about alternative universe, and it just felt like this was a doomed world and the protag would save another world as a transfer student.
You could also see various ridiculous remnants of it having been a role play. Somebody is doing a fusion of Medaka and that girl from Monogatari. Somebody else is a One Piece esque Banchou etc etc. Then I imagine by some arbitrary way, the victor gets determined and the author takes this and just kinda improvs.
In practice, this results in maybe some of the least satisfying writing maybe in existence. It also gives me the same feeling when I read a terribly written NTR. You spend chapters of this relatively short series building up a bunch of characters only for them to die so pathetically that you regret having read the last couple of chapters. Why even also have the war as a backdrop if one side basically gets eliminated by like 3 ppl, but the power balance gets so bad and the story cut short so much that the 90% of the other side literally dies off screen. Then the girl that got so much focus in the beginning literally does NOTHING and then basically shows up as a stupid corpse to be eaten at the end.
It's pretty baffling. If the author admitted he was trolling by writing the worst thing in the world, then I would probably accept it and also just move on because it was unsatisfying even as a troll. But this isn't necessarily a troll because he was trying his best to setup a lore that could blanket another dogshit bbs death game role play he can find.