Kōga-ryū
- 甲贺流（甲贺流是著名的忍术流派之一，但并不存在以此为名的具体流派，仅是近江国甲贺地区传承的忍术流派的总称）
Kōga-ryū
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abstract:
Kōga-ryū (甲賀流, "School of Kōga"; occasionally transliterated as "Kōka") is an ancient school of ninjutsu. It originated from the region of Kōga (modern Kōka City in Shiga Prefecture).
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WordNet