A Youkai who, in the fifth episode, mistakes Natsume Takashi for Natsume Reiko and asks for his name back. Kirinoha's name isn't in the Book of Friends and as the episode progresses it seems that Reiko has played numerous amounts of pranks on him. However Natsume does his best to prove that isn't so, even to the extent of fainting due to sickness and exhaustion. While Reiko was alive, he told her that he wanted to see the sea. However, being born from the forest, he believes that he isn't allowed to leave the forest. His name was on branch that was on top of a very tall tree. Reiko told Kirinoha that he has to wait 50 years before retrieving his name or else a series of catastrophic events will occur. When Kirinoha climbed to the top to retrieve his name, he was able to see the sea. It seems that Reiko played pranks on him so that one day, when he does retrieve his name, he will be able to see the sea.
Age: 15 (debut), 25 (end) Birthday: May 19, 1993 Ishizawa attends the same Junior High as Takagi and Mashiro. Ishizawa draws ecchi headshots of girls and brags about it. He later insults Mashiro's drawings. He is a large nuisance to the duo. (Source: Bakuman Wikia)
Ashirogi Muto's editor at Hissho Jump. He was the editor for Private Evil Eye Nougami Neuro, Beelzebub, and Toriko and is currently the Vice Editor-In-Chief at Hissho Jump.
Age: 33 Birthday: September 10, 1985 She is one of Ashirogi Muto's assistants, along with Takahama and Ogawa. She is their only female assistant. She has one year of experience with shounen and one year of experience with shoujo. She gains experience throughout the series as she becomes an assistant for Takahama's Business Boy Kenichi, Aoki Kou's A Time of Green Leaves, and then later back to being assistant for Ashirogi Muto's PCP after one of their assistants gets serialized.
The series' protagonist. A young arms dealer and the daughter of Floyd Hekmatyar, a global shipping magnate . Belongs to HCLI's European and African Logistics Division. She is physically attractive, with long silver-white hair, pale alabaster skin, striking blue eyes and her trademark smile, which is present even under dire circumstances. She is extremely charismatic and bold, which earned her great success in her business as well as the fierce loyalty of her subordinates. While generally behaving in a bubbly and slightly childish manner, Koko is actually rather ruthless and has been called a 'monster' by various characters. R reveals that she has never shown her true emotions since he met her. Before the series, she showed far more emotion, begging her subordinates to save her when Hex attacked her. However, after Echo's death, she took his final words to heart and keeps smiling no matter the situation. Koko has shown deep attachment to her team in general, going so far as to use Jormungand to save them. She considers Jonah a little brother and is very affectionate towards him. Valmet has a crush on Koko, but whether Koko reciprocates the feelings is unknown. She has a soft spot for R and Echo. She hates her father, Floyd Hekmatyar, as he was the one who pushed his children in arms dealing.