The skin is “fiber-reinforced polymer sheet”. The structural ribs are laser-cut steel.
This house is in the Shibuya District in Tokyo. The architects felt they needed a strong form in this particular location to prevent the house from being “swallowed up” by its surroundings over time.
One wonders what the interior space would be like with furniture …. the interior does seem to be compromised.
Also, how is the physical security? How difficult is it to cut into the exterior skin? How is the insulation value?