Seireitei is a circular shiro with four main entrances, ten days walk apart, each guarded by a Gate Guardian. These gates are called the Black Ridge Gate (黒隆門, Kokuryōmon) (in the North), the Blue Stream Gate (青流門, Shōryūmon) (in the East), the Red Hollow Gate (朱洼門, Shuwaimon) (in the South) and the White Way Gate (白道門, Hakutōmon) (in the West)
Here now is the Seireitei Walkway, where Shinigami used to travel from one destination to another. The Walkway is usually confusing, similar to a maze. If a Shinigami has a bad sense of direction, hope him or her good luck finding a way out.
