Since when first rpg has been japanese?
Whole genre started on latelate seventies on computers, inspired by D&D and other pen & paper roleplaying games.
Also, to be more on topic, that demo reels feels rpg'ish, so it does what it needs to do, but for some reason the sound quality feels bit off, could be youtube shitting quality as usual. (and I'm again reminded that I need to listen that Megaman XA album of yours.)