The Demon Slaying Ninja Army a.k.a the Chuuma Ninja (誅魔忍軍) are a group of female ninja that specialize in fighting youkai and other supernatural forces. Two notable members are residents who live in the Yuragi Inn.
The Chuuma Ninja are a group of female ninjas who utilize spiritual abilities to protect the population of Japan from all forms of monsters. They consist of various branches and stations throughout Japan and serve a main household.
To preserve strong warriors, they participate in a special festival known as the Ninja Festival where all the Chuuma Ninja gather in the main village along with many other spiritual users who seek to find strong wives with powerful spiritual abilities.
The Chuuma Ninja all wear hair accessories that resembles Ninja tools as a form of training to create a weapon out of spiritual power and maintain it. This also serves as a tool they can utilize whenever they need it.
They are independent from the Three Families and unlike them, the Chuuma Ninja appear to be more considerate to the populace in keeping the peace.
- Ameno means "rain" (雨) (ame) and "field, wilderness" (野) (no).