Kouga School

The Kouga School of Ninjitsu are an organization of ninjas, who are part of Japan's darkness but operate globally.

Baggage City Arc
When the Science Guardians held the Natural Selector tournament, a group of Kouga ninjas infiltrated Baggage City with the intention of finding and obtaining a suitable supernatural power user to analyse for the sake of developing supernatural powers for the Kouga.

Members

 * Oumi Shuri
 * Asai (deceased)
 * Sakata (deceased)
 * Yasu (deceased)