10 bunker-like houses in Japan that offer total privacy

Japanese houses come in all shapes and sizes, but privacy is always a big concern. Here are 10 that offer their residents complete seclusion, from an angular concrete bunker to a seemingly windowless box.
Kamiuma House by Chop + Archi 
This monolithic house is designed to fill a challenging triangle-shaped plot in Tokyo, and uses its sharp "dead space" corners as hidden courtyards.
While enabling Chop + Archi to create a softer-shaped interior, these courtyards shield the interiors from the