DESCRIPTION:
Fudo Myoo is a protector of buddhism and a wisdom king, he is highly revered in Japan. Several branches of buddhism practice the purification of body-mind with fudo mantra recitation. This deity is now part of popular buddhism in Japan.
In order to practice correctly, ask a buddhist teacher for explanations. Here are some schools that practice Fudo myoo mantra : Shingon, Tendai, Shugendo and some Zen practitioners.