+Koga refers to a historical region and a renowned tradition of [ninja](/wiki/Ninja) from [Japan](/wiki/Japan). Alongside Iga, the Koga lineage is celebrated for its distinctive martial arts and espionage techniques.
+## See also
+- [Iga](/wiki/Iga)
+- [Ninjutsu](/wiki/Ninjutsu)
+- [Martial Arts](/wiki/Martial_Arts)
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