that is a cool NP

Oh this is quite the..."mess" good idea but its a mess like really, do some clean up.

Daemon of Crawling TentaclesYou're underestimating fanfic reader standard of good

Rising of the Shield Hero and Kimetsu no Yaiba crossover
Naofumi Iwatani x Shinbou Kocho

Wait, if this is a Kimetsu no yaiba/Demon slayer crossover with FGO, does that mean that the OC servant knows Breath of the Sun?

While interesting, it's a convoluted mess and not praise worthy, good try though. Dunno about the other people who will read this and say something close to "this is good" but those people are illiterate monkeys who even praise a fan fiction story full of misspelled words and over the top bad grammar that makes my head ache.