On an island in the shape of a teardrop live two sisters. One is admired far and wide, the other lives in her shadow. One is the Oracle, the other is destined for the Underworld. But what will happen...

Life at the prestigious Q High School for Girls in Tokyo exists on a precise social axis: a world of insiders and outsiders, of haves and have-nots. Beautiful Yuriko and her unpopular, unnamed sister...