Loups=Garous

In a futuristic setting, both Psychic Pass and Loups=Garous carries a theme involving a society being controlled by a higher power/system. The characters from both series strives to solve mysteries and murders with their own lives at risk. At many instances, there's a sense of isolationism as well as antagonism by their society itself. There is also science fiction themes packed with some action. 

Futurisitic societies where people isolate themselves from each other, the series deal in the long run with a secret that revolves around exploiting females and stopping said exploitation. 

Future cities where the lives of people seem to be completly all right, only for there to be some dark, deep secret. The art style of both series is along the lines of gothic. There is also the slight element of school, whereas school is mentioned, even though it isn't very important. 

Plenty of overlap in their themes, especially regarding "fighting the system". 

If you really liked or fell in love with the brown-haired main girl from Loups=Garous and liked her cuteness/shyness and looks-like-she's-gonna-cry personality, then I highly recommend that you watch Girls und Panties—I mean Girls und Panzer... The main character has the same short brown hair like the main chick from Loups=Garous. Plus, her personality is cute, shy, lonely, and in need for affection. So bottom line: If you "fell in love" with the brown hair chick, go watch at least the first episode of Girls und Panzer. Oh, and this girl tends to blush, so you'll see your female friends blush too. 

both about a group of "friends" who commit questionable acts in search of truth and justice. 

Both are set in future where seemingly utopic society works after large population reduction, but the dark truth is hidden from young protagonists who try to unravel it facing many challenges, expecially the challenge of doing so and not being caught by some form of supervision over them which is present from the beggining. 

The two series has several similarities: A group of children in a futuristic setting, getting involved in an incident that eventually they'll have to investigate to explore and solve its hidden mystery that is affecting their very lives. While both series has mature themes, Loups=Garous contain scenes that may be disturbing for some viewers.  

The government has a dark secret they don't want the public to know about. The main characters stumble upon a part and slowly unravel the secret. There is a lot of angst and an overlying dark mood to both plots. 

A group of girls killing, death of a friend and great art 

Loups=Garous reminded me very much of the Kara no Kyoukai series. Both contain murders, fights, mystery, and emotionless protagonists.