Psychic Detective Series Final Vol. 7: Solitude (Gekan)

Katsuya Furuyagi lost the psychic ability, so he dives into the mind of his former lover in coma state Aya Shingonji with the help of Rosemary. Will he bring back his love to the world of light, get over his trauma and perhaps save the world or is there only desperation ahead?

[From vndbreview]