|Japanese name:||飯綱 紀之|
An old friend of Kagura and ex-fiancée of Isayama Yomi. He uses Kudagitsune, or spirit pipe foxes, to spy on people and fight. He's very perverted, and constantly tries to grope Kagura, with painful results. He is part of the information department.
Underneath his perverted and cheerfully helpless facade, Izuna is very powerful, able to fight on equal terms with Yomi. He is very knowledgeable on the subject of spirits and is skilled in hojutsu. He treats Kagura like a little sister and demonstrates concern for Kensuke. As Yomi's ex-fiance, he still had feelings for her. Behind all of his jokes and lecherous acts lies a man full of pity and self-loathing. After the Kyuubi arc, he tagged along with Imawano Shizuru to find her sister, Setsuna, but it is still unknown if they managed to locate her. He meets up with Kensuke and Kagura on the mountain and mistakes Izumi for Yomi. Izuna sees a lot of himself in Kensuke, which is why he wants to help Kensuke become stronger so that Kagura won't share the same fate as Yomi. It is reveled that he was blinded when he was poisoned by Mitogawa; now relying on his Foxes to see. He is fatally wounded when he protects Yomi from a stab meant for her. As of chapter 49, Yomi had one of her protectors sacrifice the remaining power of his soul to save Noriyuki. He is seen later defending her from Mine, Sharing the same Evil spirit state Yomi is in.
Ga-Rei: Zero reveals how different Noriyuki was before the events of the manga. He was more of a playboy rather than a pervert, which angers his fiancée, Yomi, even though it is shown he does care about her.
Ga-Rei: Tsuina no shou reveals he saved Tsuina from a evil spirit and fought Mikado when he was planning to kill her to stop a spirit, claiming "Pretty girls are the countires treasure" and took her under his wing for training. He claims to be interested in her but given his nature he could be joking.