Nana Korobi Ya Oki - '7 Times Down 8 Times Up': Success Secrets from the Martial Art of Ninjutsu
By Jeffrey Miller

On the left lapel of every adult student here at Warrior Concepts, there is a patch bearing the Japanese kanji character 'NIN.' Although the kanji itself has two pronunciations in Japanese, it is the original Chinese meaning of "perseverance," "to endure," or "to put up with" that we...

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