Lineage Tenryu-ji Based in Ryu-Un Zendo, Tokyo Name Sasaki Genso | School Rinzai Nationality Japanese Title Roshi | |
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Sasaki Gensō (佐々木 玄宗, born 1947) is a Japanese Rinzai Rōshi, a successor in the Tenryū-ji line of Rinzai Zen, a teacher of Jikishinkage-ryū swordsmanship, and a calligrapher.

Sasaki Roshi founded the Ryu-Un-Zendo in Tokyo in 1984 and since 1992 he has been teaching at the Asahi Cultural Centre, also located in Tokyo.
References
Sasaki Gensō Wikipedia(Text) CC BY-SA