FYI: S. John Ross has posted a preliminary version of an OVA conversion to his upcoming Uresia 2nd edition.
Uresia is a very anime-influenced fantasy world which was previsously published by Guardians of the Order for BESM. After the closing-down of GoO, S. John Ross purchased the Uresia rights and is working on a 2nd edition. The 2nd edition will be a "systemless" product.
Man, that's hot. Uresia is my favorite anime RPG setting of all. It's really a masterpiece in terms of setting design, too. Even if you're aiming for a different genre or setting era, using Uresia and its design as an example can't do you wrong.