Taking Back makes a lot of references to other anime, but Kill La Kill is the most referenced. Every time a scene takes place in a classroom, you can see a girl with dark blue hair with a red ribbon carving the side of her desk with a pair of broken red scissors. Which is a clear reference to Ryuko Matoi from the Kill La Kill reference. This character is not present in the manga.
Despite the fact that the anime claims that it was only written by Cruz Avery, The original series was actually written by 2 people, the other person is Otani Takahashi. She was removed from the credits in the anime as the story was altered a bit to fit an anime release, she also has no connections to the anime adaptations other than the character designs! Also another fun trivia, Otani Takahashi is not actually her real name, it's a stage name and her real name has still not been made public.