An old friend of Kagura, also ex-fiance of Isayama Yomi. Uses Kudagitsune, spirit foxes to spy on people and fight. He's very perverted, and constantly tries to grope Kagura, with painful results (for him). 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 at creating barriers. He treats Kagura like a little sister (aside from groping her) and demonstrates concern for Kensuke. As Yomi's ex-fiance, he still had feelings for her.