The anime is a mixture of action and romantic comedy, although it is often classified as ecchi component due to the fanservice and shows lingerie and breasts. The animation style alternates between typical anime, still images that add drama and employment of mode chibi.
The story takes place during the era of Taisho. The Japanese government has created androids, called
"Steel Angels ", the physique of young women, who are deadly weapons with great destructive power. The person who awakens a Steel Angel will be be the sole and absolute master of this android. One day Nakahito, a young apprentice priest, made the discovery of one of the Steel Angels, named Kurumi, and unintentionally, he wakes up...