Best Japanese RPG of all time

Fan of Lovecraft? On the gothic horror? Original black magic? Fancy a RPG that is not blue and pink, with real characters in real places? Want to tranformer you demon and sweep everything on your way? Want to dynamic combat where your skill is put to the test? Like thinking during the fighting, find the best strategy and explode your enemies without giving them a chance to respond? You appreciate humor? This is the game for you.

I refer you to the many tests available on the net for details on the game system, and I will just say that you should not miss this game under any circumstances.