+Traditional *ninja* organizations, though often informal, recognized a hierarchy of skill. These 'ranks', from the nascent [Genin](/wiki/Genin) to the experienced [Jōnin](/wiki/Jōnin), reflected a practitioner's mastery in espionage and combat arts. Such tiers guided their roles in missions and development within their hidden communities.
+## See also
+- [Ninja](/wiki/Ninja)
+- [Nin術](/wiki/Nin術)
+- [Kunoichi](/wiki/Kunoichi)
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