anime and blood...
it's like they're saying:
"We are tough Samurai and aren't afraid of battles no matter how bloody they will look like."
But that's not really how wars work anymore. Don't get me wrong they are still brutal and horrible. But it's more like pushing a button and then not noticing anything as a nuclear bomb or a drone hits their target.
Similarly, mecha animes are very popular among Japanese boys. As you can again fight with martial art styles like Kenpo or even hand-to-hand combat. But it's just not realistic.
Let's face it: There's nothing glorious about war.