Dojin Work (TV)

the name of Najimi Osana is in fact a play of words: Osananajimi means "childhood friend" and it's a main standard character in most eroge

The "Cafe With Cat" where Najimi works as a waitress exists for real. It's located in the famous Otaku capital of Akihabara, Tokyo.

The sequence in the opening credits that shows a trapped Justice and Najimi subsequently peeking into a room where he can be seen weaving cloth is a reference to the Japanese folklore tale "Tsuru no Ongaeshi" (鶴の恩返し). In that tale, an injured crane helped by a man magically returns as a woman to aid him in repayment. However, the spell is broken when the curious man looks in on her as she weaves and he learns her true form.