Roshi Musai Walter, teacher and priest at Prajna Zendo (prajnazendo.org) , began studying Zen in 1970 with Shunryu Suzuki Roshi. He later became a student of Taizan Maezumi Roshi and remained with him until Roshi's death in 1995, when Musai became Jitsudo Sensei's student. Musai received dharma transmission from Jitsudo Sensei in 1999. In addition to Zen practice, Musai Roshi studied with Chogyam Trungpa Rimpoche.
Musai Roshi received denkai from Genpo Roshi in 2004, studies Big Mind process with Genpo Roshi, and is an authorized teacher of Big Mind.
On January 23, 2008, Musai Roshi received Inka from Genpo Roshi, at Genpo Roshi's Mahasangha gathering, on the island of Ameland, off the coast of The Netherlands. Inka is a feature of our Rinzai lineage, and it is considered “the final seal of approval.”