 If you liked
Tokkou
|
 ...then you might like
Yakushiji Ryouko no Kaiki Jikenbo
|
Both animes are about a special forces within the MPD that deals with supernatural cases only.
Both series contains a dark atmosphere with supernatural elements in the field of detective fiction, crime solving, action, horror, and mystery.
Both series' main protagonists are involved with the police force although with different motives. Both series also contains violence and gore mixed in with some inklings of romance.