Though it is not recognized in the theory of Goshu (Five Realms), in the theory of Rokudo it refers to the world in which people with fighting spirit at any time live in such mental condition, or refers to such a mental condition.
なお五趣説では認めないが、六道説では、常に闘う心を持ち、その精神的な境涯・状態の者が住む世界、あるいはその精神境涯とされる。