@Xdqwerty to address anime being of the devil would say Pokémon was pretty vanilla. Something like Full Metal alchemist has the protagonist learning forbidden knowledge akin to sorcery (alchemy) .
@Xdqwerty Additionally fundemental christians will call anything that does not follow the christian beleif system "of the devil".A lot of the animes will have Buddhist and
Shinto themes because those are the belief systems of Japan