Mahiru is the main protagonist in the series. She is a normal human who happens to be the descendent of a legendary princess. The princess in the legends fell in love with a demon but the demon was killed by the princess’s human father. A war then started between the Lunar Race of demons and the humans. Mahiru is guided by the legendary princess’s spirit to make amends between the two races. She joins with a group of Luner Race, who live at the Moonshine bar, and prepares to help make amends. She later also has a romantic relationship with one of the demons known as Mitsuru Suou, a Tengu .