Kawahira Keita is a descendant of a historic Inukami tamer family; however, because he lacked in its ability, he was forsaken by the family. One day, an Inukami named Youko came. She looked graceful, obedient, above all, beautiful. Soon he contracted with her, and she paid homage to him. However, she was a problematic Inukami that no one had been able to control. This is a slap stick comedy of an Inukami Tamer, Keita and an Inukami, Youko. Keita is a man of worldly passions, and he likes money and girls very much. On the other hand, Youko likes to destroy things and is very jealous. (Source: AnimeNfo)

Leon, who has succeeded the name of Golden Knight "GARO," devotes himself to train a young Makai Knight for the next generation, together with Prince Alfonso of the Valiante Kingdom. Then, they receive an order to exterminate the most beautiful Horror in the world which resides in a neighboring country "Vazelia." At the same time, a young Makai Knight for the next generation is kidnapped by an unknown person. Leon desperately follows them, only to find that he is surrounded by his enemies at a dead end. Then, a Makai Knight Dario who was supposed to be missing for some time suddenly appears and rescues him. Under his guidance, Leon is led to the town where he meets up a totally unexpected person.

In the near future, there are people with special power called Sevens. It seems like the country has maintained peace by a company called Sumeragi Group, but they are the one who captured the people with the special power by force and did inhumane experiments. Gunvolt, the main character who has the power of Sevens, used to be in Feather, a resistant group who fought against the Sumeragi Group. The story begins with meeting the heroine, Sian.

The story follows Benio "Haikara-san" Hanamura, who lost her mother when she was very young and has been raised by her father, a high-ranking official in the Japanese army. As a result, she has grown into a tomboy. Contrary to traditional Japanese notions of femininity, she studies kendo, drinks sake, dresses in often outlandish-looking Western fashions instead of the traditional kimono, and is not as interested in housework as she is in literature. She also rejects the idea of arranged marriages and believes in a woman's right to a career and to marry for love. (Source: ANN)