This is the second house at the foot of Mt. Fuji. Because of deep forest, we can’t see the shape of mountain, but the south side of the site is a part of Mt. Fuji. The Client wants to make Loft space, so we decided Shed roof which is opened to Mt.Fuji. On the other hand, if we chose the shed roof, heavy snow falls to the north side of the house in winter, and north entrance will be buried in snow. So we started redesigning the roof from regarding the Shed roof as one plate which drops snow and rain. We fixed the slant of the roof, but fold it In a longitudinal direction, to redesign how to drop snow and rain. Approach terrace penetrates into the house volume and it divides this house to two volumes. The shed roof is folded in the mountain fold over this entrance approach, so snow and rain fall beside this approach. When we fold it in the valley fold, we can gather the snow beside the parking space. On the rainy day, we can see the rain fall from the valley of the roof from the picture window. In the lounge space surrounding wood stove, we can find the Valley of ceiling in the big room. It divides one room gently, then we started to consider how to use the space. As response to the roof design, the slop and step is installed into the house, it is like another landscape for the clients who loves the outdoor life for example trekking or mountain bike. Loft space connects two volume of the house, and also act as the daylighting space and ventilation wind tunnel which keeps room condition comfortable in the passive way.