Psychic Detective Series Final Vol. 6: Solitude (Joukan)

Several months after the events of the "Nightmare" part.
- "Aya Shingonji is alive, I need your help" said the man who visited the hero at the hospital room.

Katsuya Furuyagi lost much of his psychic force after the "Nightmare" incident when he spend almost all of his power to to drag the consciousness of murdered Langhao who got resurrected to the body of Rosemary girl. Aya was Katsuya former lover who lost consciousness and existed on a vegetative level with life support system. Is Aya truly alive? The biggest crisis of the series approaches.

[From vndbreview]