The history is placed right after the -cliffhanger- end of Godannar when Anna looks surprised to see Mira driving the Neo Okusaer.

Miki Onimaru is a poster girl that works at her mother's Chinese ramen restaurant. She appears to be a normal girl, but she can become very violent if provoked. She picks a fight with her mother and accquaintances as a result on an almost daily basis, causing a series of troubling mishaps in their otherwise normal lives. (Source: ANN)

Three oni-kids who, through the power of the onipan (a portmanteau of "oni" and "pantsu") become human to help fix the relationship between humans and oni. The three girls transfer into a normal Tokyo high school to aid in their task and help fix their image by revitalizing the town, sometimes jumping headfirst into school events, and other times ... becoming idols!

Thousands of years ago, the evil emperor Talpa attempted to conquer the Earth. Defeated, he was banished to the Nether Realm and his armor was divided into 9 separate suits. Now, he has returned to conquer Earth, having reclaimed 4 of the suits. The other 5 are in the possesion of those who are the only hope of stopping him: The Ronin Warriors.