Saiseiya is a protector of ingredients from being exhausted and have the power to arrest anyone who over poaches. Many Saiseiyas work in the country Life, but have since set up many other bases of operation. They are neutral in terms of Bishokuya and Bishokukai, but will step in when an ingredient is in danger of being over hunted. As told by Toriko "They are every poachers worst nightmare." They are trained in unknown locations and are few in number, but are said to have immeasurable strength. There is a powerful and deadly subset of Saiseiya known as Dark Saiseiya who use darker and twisted form of healing to further their goals. It is said that Dark Saiseiya are bred by reading the Dark Chapter, an infamous collection of such Dark techniques.