@GranTorinoDSA The Japanese technically have Aryan blood. They are a mixture of mainly two ancient populations, one of those being the Jomon, the Jomon had quite obvious Aryan features. It is also important to take note of the Ainu. They are the most European Asians.
There's a great part in the Two Towers movie (a bit different from how it goes down in the book) where the conniving political advisor realizes that Eomer's accurate perception of reality makes him too much of a threat to have in any proximity to the throne. He gets Eomer banished so he can continue degrading the integrity of the kingdom and enforcing public denial of there being an ongoing state of invasion.
So Eomer gets the warriors who are still loyal to their homeland together and they just head off to the borderlands and continue smiting roving bands of invaders anyway, without permission. His fidelity in these matters (while technically an outlaw) is what places him and his men where they need to be for the eventual rescue of the hobbits, as well as the eventual salvation of their homeland.
"We left none alive" - Eomer