|Japanese Voice||Shinya Takahashi|
|English Voice||Jason Liebrecht|
Noriyuki Izuna (諫山黄泉) 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 also 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 revealed that he was blinded when he was poisoned by Mitogawa; now relying on his Kudagitsune to see. He is fatally wounded when he protects Yomi from a stab meant for her. As of chapter 48, 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.