Mei lives in an orphanage, but she is adopted by the wealthy and kind Uda family. The family already has an adopted daughter Rana. While Rana seems weird, Mei and Rana find that they have a lot in common and become like real sisters. The girls then learn that the Uda family's business has collapsed and they can only keep one of the daughters. One of the girls will be returned to the orphanage in a week. Revenge is soon planned.
Is Black Maiden: Chapter Q on Netflix? Unfortunately the movie Black Maiden: Chapter Q is not yet available on Netflix.
| Directing | Sakichi Sato | Director |
| Production | Gen Ozeki | Line Producer |
| Crew | Masayoshi Deguchi | Stunt Coordinator |
| Production | Naotaka Yoshida | Executive Producer |
| Production | Tatsuyuki Iizuka | Producer |
| Production | Tatsuya Mukai | Producer |
| Writing | Sakichi Sato | Screenplay |
| Production | Naoya Ito | Casting |
| Camera | Tojiro Kurita | Director of Photography |
| Art | Akira Sakamoto | Production Design |
| Sound | Ryôta Takashima | Sound Recordist |
| Costume & Make-Up | Kyouka Sugimoto | Costumer |
| Costume & Make-Up | Yûichi Matsui | Special Effects Makeup Artist |
| Editing | Chikako Nanba | Editor |
| Sound | Hideo Koyama | Sound Effects |
| Sound | Koji Endo | Original Music Composer |
| Directing | Toshiaki Kondo | Assistant Director |
| Lighting | Anna Tanaka | Gaffer |