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This is the martial arts title Zendokai.
The first two characters refer to Zen ascetic practices or Zen teachings. Noting that Zen or 禅 means meditation and Dou/Do or 道 means way.
Kai or 会 (originally written 會) in this context means society, association, or club.
Zendokai Karate beyond the normal fighting skills invites the practitioner to notice and observe their own body with mindfulness and self-awareness and can re-acquire and hone their genuine self.