A man is being haunted by a ghost, since exorcisms did not work they want Kogorou to solve the case. The clue is a card that says the fifth ghost will kill them unless they repent their sins. Since the time that card was sent, the master installed a door that needs a pin code and fingerprint scan to access the top floor. The master, lady, and the installer of the door are friends who are hiding a secret about the sin.
Genres: Animation , Comedy , Crime , Mystery
Keywords: adventure , age-change , anime , based-on-manga , cop , detective , dramatic , japan , japanese-high-school , mysterious , secret-identity , secret-organization , shounen , suspenseful , watch-series-online , watch-anime-series-online