It's a narrative investigation adventure, the kind that filled PS2's Japanese catalog: a remote mansion, a mystery to solve, and a protagonist, detective Ichiyanagi Nagomu, taking on his first case throughout the story.
It never crossed Japan's borders and today is a minority piece even there, of interest mostly to collectors of PS2-era mystery adventures.
This system doesn't run in the browser yet (Dreamcast, GameCube, PS2 and Xbox are on the way as web emulation matures). The dossier, media and community are already all yours.

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