Sōtō Zen descends from the Chinese Caodong school and was established in Japan by Dōgen in the thirteenth century. It emphasizes zazen as the expression of buddha-nature rather than a means to awakening, and is the largest Zen school in Japan.
Sōtō
The Japanese Zen school founded by Dōgen, centred on shikantaza and the unity of practice and realization.
Also: Soto, Caodong