Takuya's father died during an accident while he was doing research. Worried about his young stepmother, Ryumi, Takuya follows her to Ken point. Watching her and her best friend, Mitsuki, from behind a rock, a sudden flash of light turns into an unearthly beautiful woman. The mysterious woman slips a ring on his finger, and Takuya's travels into a parallel world begins.

Takuya is taken to his stepmother's company headquarters, Geo Technics, by a mysterious girl. Meanwhile, Miyo is making love to Canna. Cann's mind drifts during the lovemaking, and she sees a blonde, beautiful figure. The figure tells her mysterious things. "Blue light leads the way, black leads to destruction."

Puzzled, Canna asks the figure, "Who... who are you?" The figure replies with a cryptic answer: "We are both related to my father..."

The sudden, quiet death of Canna Hatano. Takuya was able to bring Canna back to life by following Eriko's advice. Instead of changing the past, it is now possible to create a new history altogether. But why? Looking for answers, Takuya sets off on a new adventure.

Following the light, he is thrown into a new, mysterious world called Della Grand. It is a beautiful country of lush forests and stark deserts. His future is waiting for him here. The fate of the world in her hands, the great priestess Selles tells Takuya "You are my eternity; I have been looking for you."

It's been two months since Miyo, and many others, have been taken prisoner by the armor-clad soldiers. Naked and chained in a dungeon with others, Miyo ponders her dismal situation when suddenly, a female figure enters her dungeon cell, wielding a sword!