This villa is a recreation of a vacation home built in Karuizawa in 1997. The floor slab is curved up to the roof against the hillside at the rear, naturally absorbing the pressure of the soil behind it and channeling it to the floor slab. In addition, the rear edge of the horizontal roof plane is fully anchored to the top of the floor slab, thus channeling all horizontal forces to the floor slab. The three minimal columns on the front (seaside) facade are thin and bear no horizontal forces at all, but only vertical forces. All walls are eliminated, with the space enclosed entirely by movable sliding doors. The kitchen and bath are located in the open on the same "universal floor," and the space can be flexibly partitioned by sliding doors.