Ouchi is a traditional Japanese architectural style characterized by its wooden structures and tatami mat flooring. This style often features sliding doors called fusuma and a central courtyard, creating a harmonious connection between indoor and outdoor spaces. Ouchi homes are designed to promote simplicity and tranquility, reflecting the principles of Zen philosophy. The term "Ouchi" can also refer to the Ouchi clan, a powerful family in Japan during the 15th century. They were known for their influence in the Yamaguchi region and played a significant role in the political landscape of the time. The clan's legacy is still remembered in Japanese history.