Tenshukaku (TCG)

Tenshukaku was the rokugani term for castle keep. The heart of any castle was the keep, built atop a strong stone foundation. A typical keep was three to six floors in height, not counting the foundation and sublevels within it, although the castles of high-ranking lords could have up to nine floors (only the Imperial Palace in Otosan Uchi had ten floors). The keep was the home of the castle's daimyō, whose personal residence was always on the highest floor.