The rules must be few and, more importantly, simple.

It has 'Fuji no ma' (room of Mt. Fuji) at the south-eastern side and a main fort 'Tasogare no ma' (room of twilight) with toko (alcove) and tana (shelf) in the north of its layout, and the western side of the construction is divided into several small rooms including 2 jo no chashitsu (tea room in 3.3 square meters area).

Investors are concerned about the liquidity of the company's assets.