Black Jack (TV) - episode 43 - 11 Sep, 2005

Black Jack was invited by his former mentor who is doing research in Africa. When he arrived at Africa, he was shocked by the plague that made him bizarre. He didn't leave immediately because he was also infected. He stayed for 27 days, and after waiting for an answer, Black Jack created the cure for the mysterious disease; however, he failed to give it to his mentor.... (Source: Wikipedia)