This is a fairy tale that takes place in the lawless town of Kaguya that floats in the sky. Tsukasa runs Café Amelia with a lone employee, the self-proclaimed future great magician Natsu. However, they have another side to them; they are part of a team of justice-fighters that do everything from preventing thefts to serving as personal guards. The other members of the team are also frequent visitors to the coffee shop: the songstress Daria and the strongest swordswoman Makoto.

One day, Natsu and Makoto rescued a princess who was looking for her missing older brother. This girl Yuki was actually Tsukasa’s imouto…