The Shisei is a group of four powerful Youkai Sennin from Kingo Island's Kuryuu Islands that are devoted followers of Bunchuu. They were known throughout most of Kun Lun and Kingo as the group which helped Bunchuu drive out Dakki (known as Ou Shi at the time) from the Yin about 60 years prior to the start of the series.
The leader of the Shisei. His paopei, Kaitenjyu allows him to be capable of flight and is also used as bombs of sorts. When dispatched, they aim at a target and explode, causing great damage.