DESCRIPCION
Souichi is an ordinary uni student, sleeping during class as usual.... "Wake up!" Its Satsuki who always wakes him up, and they have a quarrel playfully. Its just their everyday event. But one day, a mysterious accident happens..., big ships disappear one after another.... And mysterious girl, Lisa, suddenly appears in front of Souichi.... Triggered by this meeting with Lisa, Souichi gets involved in the case....