Hida-no-Kami

Hida was one of the Kami who fell to the mortal realm from the Celestial Heavens, and founder of the Crab Clan in Rokugan. He placed the seat of his clan in the great mountains of the south. Three men stepped forward to prove themselves and were sent to slay a terrifying demon. Working together, they prevailed and were accepted as the founders of the great families within the Crab, the Kuni, the Kaiu, and the Hiruma family.

First War
After the Seven Thunders repelled Fu Leng's dark army from Rokugan, the first Emperor Hantei commanded to build a wall to protect the Empire from the evils of the Shadowlands. The Crab used slate-grey blocks fitted together to make a structure of thirty feet thick and a hundred feet tall, the mighty Kiu Wall.