Based on novel by Kaminaga Manabu. Shinrei tantei yakumo aka psychic detective yakumo tells a story about a college student, Saitou Yakumo who born with different eye colors. His red left eye gave him a special ability to see ghosts and spirits. He believes ghosts and spirits are bound to earth because of a certain 'cause' and simply by eliminating that 'cause' will those spirits rest in peace. Being asked for help by Ozawa Haruka, together they began the investigation.