First off, I never said that we should use fuck instead of bloody, I'm just questioning the use of bloody since it doesn't fit in with the timeline if this was Earth, which it isn't, or the isekai genre as a whole. I never said the world revolves around America, the hell are you on about?
It feels like you are trying to make this into some "america always says their better than everyone". But this is about marketing and flavoring of the story. You can prefer bloody if you want to, I don't care, but my OPINION, is that bloody doesn't fit in the context of this story.