Woman in the Chair

This was an interesting story, which increased in tension and suspense, as it moved along. An eerie set, a dilapidated house on a piece of land cut off from the mainland by flooding, due to a storm. A man searching for someone or something explores abandoned houses in Japan. In one he finds a strange woman or at least the remains of a woman sitting in a chair, at a table. She doesn't move and he doesn't know what to make of her. A young woman invites him to a meeting, where he can "pitch" his proposal to get investors to finance him to study the phenominon, which he has discovered. A motley group joins him in this effort and he sells interested parties tours of the house, with the "sitting woman", to get more research money. The movie reveals the "sitting woman" begins to influence the very thoughts of the group and the visitors. The film seems headed in an interesting direction; however, I found that it sort of falls apart in the hurried ending, which I really didn't comprehend.