Izuru is a supporting character in the 2024 anime film My Oni Girl. He is an adult male oni with blue hair that reaches his ears and purple eyes, often seen wearing a horned jacket.

Primarily, Izuru is known as the father of Tsumugi, the film's female protagonist. His role in the story is deeply tied to the central conflict: he lies to his daughter about the whereabouts of her mother, Shion. This deception directly motivates Tsumugi to leave the Oni Village and embark on her search, as Izuru refuses to give her a specific explanation for her mother's absence, which causes her significant frustration.

Izuru's actions stem from a complex motivation rooted in protection and the burden of difficult truths. He chooses to hide the reality of Shion's fate, aware that she is trapped at the Oni Shrine, forced to wear a mask that summons the Snow Gods and conceals their village. This isolation has left Shion depressed and has caused the Snow Gods to become hostile. By not revealing this, Izuru likely intends to shield Tsumugi from a painful and dangerous situation he believes she cannot remedy.

Throughout the narrative, Izuru's key relationship is with his daughter. A pivotal moment occurs when a bridge is broken during a fight with the Snow Gods. At this point, Izuru tells Hiiragi, a human boy who has joined Tsumugi's quest, to go on alone and pursue Tsumugi to the Oni Shrine. This action demonstrates his eventual acceptance of help and his willingness to step aside for the sake of resolving the crisis.

The development of Izuru's character culminates in the film's bittersweet ending. After Tsumugi successfully rescues her mother, Shion, the family is reunited. This resolution brings an end to the Snow Gods' threat and heals the separation that had defined Izuru's relationship with his wife and daughter. No notable supernatural or combative abilities are detailed for his character.