Age: 40 (currently) Birthday: June 23, 1978 Yoshida is Hiramaru Kazuya's editor. He tells the chief-editor in the meeting about his genius, which led to Hiramaru's serialization. He is able to ignore Hiramaru's personality. He is also a Captain, meaning he gets to sit in the serialization meetings and lead the other editors in his team, like Yamahisa. Yoshida is perhaps the most manipulative of the editors shown. When he realizes that forcing Hiramaru to work isn't applicable to an efficient and/or long-running series, he bribes him with rich items or information about Aoki Ko in order to get him back to work and pay off the debts he owes for buying such items. Yoshida is able to keep this running for an extended period of time (throughout the 200 chapters of Otters 11), even threatening Hiramaru with disassociation with Shueisha if he does not get serialized again after Otters 11 gets canceled. Yoshida's reason and rationality are even more key to his character. He is able to deduce that Niizuma Eiji was responsible for +Natural's artwork and worries that Hiramaru's manga will take a dive if he asks Aoki Ko out and gets rejected, knowing that Hiramaru most probably will get rejected. This reasoning has its limits, however, as Yoshida was greatly surprised that Aoki accepted Hiramaru's proposal, though it would later scratch away most of Hiramaru's negativity and cause a dive in his manga quality.
Age: 19 Orihara is a young assistant who worked with Ashirogi Muto on "Run, Daihatsu Tanto!". He is a very energetic and cheerful character that tends to get loud due to his excitement, may it be about work or something else. When Takagi and Moritaka decide to quit the series, he offers to keep working for them without payment, because he still wants to learn from them. He works as an assistant again, when they start publishing "Perfect Crime Party".
Age: 18 (debut) Shiratori Shun is an assistant for Ashirogi Muto's Perfect Crime Party and the mangaka of Rabuta & Peace. Shiratori comes from a wealthy family and has a sister. He applied to be Eiji Nizuma's assistant, but the editors had already filled that position, so he was instead hired as Ashirogi Muto's assistant. He was rejected from art school and didn't think he would make a good mangaka, but when he saw an advertisement to be an assistant he took the chance, not wanting to mooch off his parents anymore. Shiratori is a happy boy with simple emotions who easily blushes. He speaks what he feels. He loves art and feels that it should be seen and enjoyed by thousands of people. That is why he draws manga as opposed to his grandfather, who purchased art and kept it in his house where people rarely saw it. (Source: Bakuman Wikia)
Nakai and Aoki Ko's editor. He is also a Captain, meaning he gets to sit in on the serialization meetings.
Age: 42 (debut) Miyuki Haruno is Miho's mother and the woman Mashiro Nobuhiro loved. She also loved Nobuhiro but could never say it. She later married someone else. She would watch Superhero Legend with Miho when she was younger. Nobuhiro's hero, in Superhero Legend, is based on their relationship. It is about a hero, Masculine Fantasy, who falls in love with a princess and wants to be the best hero ever. The princess confesses her love to him, he yells at her, then she slaps him and leaves. She wants Mashiro and Takagi to be successful mangaka. Haruno looks very young despite her age and wears her hair in ringlets. She bears a strong resemblance to her eldest daughter, Miho, especially when Haruno was younger, looking almost exactly like Miho. (Source: Bakuman Wikia)
Age: 19 (debut) Takahama was one of Ashirogi Muto's assistants, along with Ogawa and Kato, for Detective Trap. He did the figures, both sketches, and inks. Miura said he was the best artist of the new assistants he was in charge of. Originally, Takahama seemed very unsocial and didn't talk much at all. However, after coming to respect Mashiro's work ethic as a mangaka, he reveals his ambition to work at Disney and spends several nights discussing manga with Mashiro and Takagi. He seems to be very enthusiastic about his manga, and grows frustrated with Miura after he feels that he is not letting him make the manga he wants. He respects people for their ambition and work ethic, as shown when he states that he has little in common with Ogawa and Kato because they are just happy with being assistants. Later on, he get his own manga, "Business Boy Kenichi" (Seigi no Mikata), which centers around solving legal cases. He eventually makes his way to the single-digit rankings, garnering only a few votes below or above of Ashirogi Muto several times over the course of his manga career and becoming a major character in the series. Eventually, he, too, joins Team Fukuda. When Niizuma announced his intentions to end Crow, Takahama is among the mangaka to oppose him. Takahama tries to prevent Niizuma from ending Crow by writing a captivating court case in his manga where a close friend of the main character is placed under false charges and the main character must prove his innocence. Takahama only manages to land second place, however, but expresses optimism at getting second place for the first time. (Source: Bakuman Wikia)
Yasuoka is Fukuda Shinta's assistant for his series Kiyoshi Knight. He helps Fukuda come up with ideas, and for every good idea he comes up with Fukuda says he will pay Yasuoka 3000 yen. He and Fukuda get along well. He is a young man with a red mohawk and ear peircings. He is very excitable and motivated, and is constantly moving. (Source: Bakuman Wikia)