The Sixth-Magnitude Man
Kong's sister, Chaco, is bedridden at home due to illness. Chaco hopes that Black Jack, who cured her friend's illness, will also cure her, but she ends up being hospitalized. Kong had been asked by Chaco to look for Black Jack, and when she is hospitalized, he begins to look for him seriously. In the end, Kong is unable to find him, but comes up with the idea of having Keaton from the drama club play Black Jack to cheer up Chaco. Keaton agrees to pretend to be Black Jack, on one condition...
Aired 08/11/2004EP 5 - The Sixth-Magnitude Man
Black Jack (TV)
Black Jack is an "unregistered" doctor with a clouded, mysterious past. He works with his little assistant Pinoko (who has a massive crush on the doctor), dealing with medical cases not very well known, which can be strange, dangerous, or not known at all. But he is a genius, and can save almost any of his patients' life (as long as they have the money for it, that is), and is known to many around the world, especially to those of medicine and science. He's a man of science himself, and does not believe much until he has seen it, yet it is many times he is surprised by love and nature often overpowering the science he bases his life in.
(Source: Anime News Network)