Switch
Two newbies at the Narcotic Control Department in Japan, Hal and Kai, struggle against: drug dealers, gangs, murderers, psychopaths, mysterious organizations, and mad people in general. The gentle and caring one of the group, Kai, who has problems of his own, has the tendancy of turning into a lethal killing machine in certain scenarios. The way he acts changes like that of a "switch". As the two do their job, answers of what is behind Kai's strange behavior and who exactly he is, is revealed.

there are only 2 episodes but i really enjoyed this anime it is a little hard to understand some of what is going on in the background if you have not read the manga though

Sounds interesting, gotta check it out

I really loved that anime.Even though it was a small OVA there should be more of it.
At least I read the manga I suppose...

Love it x3