Kouichi Kimura Architects has many interesting houses designed. Mostly the designs are very modern and minimalist like a lot of Japanese architecture nowadays. Although they usually have some unusual things in design. This house is completely black exterior but almost white courtyard. The interior is full of contrasts too. Some rooms are dark and some other are light. Completely black bathroom is also not common at all. Anyway, when house is full of contrasts it usually looks very modern and interesting. There are more interesting projects on Kouichi Kimura Architects website.
Can you imagine such house but with completely dark interior?