Shinrei Chousa Shitsu: Office Rei

Yuta Miyagi, an orphan, is stunned when three beautiful strangers, who reveals to be his half-sisters, to occupy the house organizing their activities of "paranormal investigator".

The approach to the paranormal is partly scientific. The three will use their knowledge of science and mysticism in order to control ghosts, attendance and more without using always strange technical or magical qualities / mediumship.