While most japanese games are only "Adventure" in the broadest sense, this is a full gothic horror adventure game from Wolfteam, in the tradition of puzzle adventure games like Curse of Monkey Island. You control a team of up to four players battling various supernatural forces in Tokyo, during 1923. Both the graphics and sound are great, but sadly, you'll need japanese knowledge to get much out of the game.

It appears an updated version of this game was released for the Nintendo DS and there's complete walkthrough (in Japanese) On StrategyWiki