Age: 23 (debut), 31 (end) Birthday: May 14, 1987 Miura is the second editor for Ashirogi Muto. He is very enthusiastic and excited, and sometimes not a hard enough editor for the boys. After Detective Trap was canceled, he pushed Mashiro and Takagi to work on a gag manga.
Age: 45 (debut), 55 (end) Birthday: February 22, 1963 Editor-in-Chief of Weekly Jump. He tends to behave indifferently or even coldly but it's all for Jump's authors and editors to regain their spirits. He has a good eye for manga and believes it's most important for a manga to be interesting. He's not afraid to make a gamble in order to make the magazine better, but will not put authors' lives at risk. He knew Saikou's uncle, Kawaguchi Taro, since he was the Assistant Editor-in-Chief at the time Kawaguchi Taro had to quit.
The teacher of Joker, Spade, and Diamond Queen. He is a legendary phantom thief who has been called the Silver Magician. He is a genius, but has a sketchy personality and hates anything bothersome. Sometimes, he ends up hurting his back. In truth, he thinks of Joker and the others as his own real children and grandchildren and cares about them, but he won't admit it due to him being embarrassed. In the anime adaptation, he sometimes breaks the fourth wall to explain certain important events in the episode, such as the tricks Joker performs.
Kaya Miyoshi's mother. Anime debut: Bakuman 2 episode 19 (Fate and Star)
Age: 35 (deceased) Moritaka's uncle. He died due to overwork, but Moritaka thought he committed suicide until he saw his work. He uses his pen name Taro Kawaguchi (�����) for his works. He liked Miho's mother, but was too late to confess to her. (Source: Wikipedia)