Kyoya's first partner, who was tragically shot to death by an armed Chinese juvenile delinquent. He was affectionately known as Hachimaki. He left behind his wife, Yukari, and his son, who was named after him in remembrance.

tsuyoshi yamaki
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Aizawa Eriko
Supporting
She is the wife of Shuichi Aizawa and mother of Yumi Aizawa.She first appeared in episode eighteen when Aizawa arrives with a bruise on his head saying he had a little fight with her because Yumi was very young and he rarely slept at home. She appears at ...
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Iida Kyouya
Main
A very cold homicide detective who prefers to solve cases by using his Glock 17 pistol. He can speak fluent English and German to some degree. In a bleak, gritty representation of Shinjuku, Kyouya doesnt take any crap from anyone, and he doesnt waste his ...
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Aya Koike
Supporting
Koike Aya is a 9 year old girl who Ida crosses paths with on a case in volume 7 of Jiraishin. She appears to be a sociopath, and very mature for her age. She also shows no remorse for those who have died, not even her friends. As a result of her mischief,...
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Narita Director
Supporting
Kyoyas superior officer at the Shinjuku Police precinct and head of the stations homicide division. He was pals with Kyoyas late father. During a trip in New York after his retirement from the force, he was nearly killed when Lisa Lewis tried to gun him d...
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Saiki Kazuya
Supporting
He is famous photographer, who tries to capture the true nature of humans. Especially interested in photos of "malice" and "hatred"; generally in the darkest side of humans. When he was younger he took pictures during conflicts and wars. Now he captures s...
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Tsuyoshi Yamaki
Supporting
Kyoyas first partner, later shot to death by an armed Chinese juvenile delinquent. His nickname was Hachimaki. He left behind his wife, Yukari, and his son was named after him in memory....





