My Oni Girl (2024) Plot Summary & Ending Explained

My Oni Girl is a captivating fantasy romance that skillfully blends traditional Japanese folklore with a modern love narrative. The story centers on Hiroshi, a solitary and introverted office worker navigating the bustling life in Tokyo. His seemingly mundane routine is completely transformed when he encounters Yuki, an enigmatic girl who is revealed to be an Oni, a mythical demon from Japanese legends.

One fateful night, Hiroshi discovers Yuki injured and unconscious in a dark alley. Although she bears horns and several distinctive features, an inexplicable connection draws him to her, leading him to bring her to his apartment for care. As Yuki recovers, she unveils the truth about her identity, sharing that she escaped her realm to evade a sinister prophecy that threatens her very existence.

As the days pass, a profound bond blossoms between Hiroshi and Yuki, evolving into a beautiful romance. Yuki introduces Hiroshi to the mesmerizing world of Onis, recounting intriguing tales and experiences that captivate his imagination. However, their serene existence is shattered when other Onis track Yuki down, intent on returning her to fulfill the ominous prophecy.

This revelation leads to a climactic showdown between Hiroshi, Yuki, and the determined Oni clan. Utilizing ancient rituals combined with Hiroshi’s profound knowledge of folklore, they battle to defy the prophecy and confront the formidable Oni leaders. In a heart-stopping climax, Hiroshi and Yuki’s love empowers them to overcome their adversaries.

Ultimately, Yuki makes a profound choice to remain in the human realm, prioritizing her love for Hiroshi over her fated destiny. The film concludes with an optimistic gaze towards the future, as Hiroshi and Yuki unite their worlds in a harmonious blend of love and tradition.

My Oni Girl serves as a poignant exploration of love, acceptance, and the dismantling of stereotypes, emphasizing the idea that true love transcends superficial appearances and societal constraints.

When Tsumugi and Hiiragi reach the Hie Shrine, they find that Shion, Tsumugi’s mother, is not there. Instead, Izuru, who’s been searching for Tsumugi all along, arrives and asks her to return to the Oni village because the Snow Gods have been acting strangely. Believing Shion is gone forever, Tsumugi is crushed and cuts ties with Hiiragi, which makes him suppress his feelings and turn into an Oni—demon-like creatures from Japanese folklore that are often misunderstood as purely evil but are actually more complex. When a Snow God detects Hiiragi’s transformation, it swallows him and takes him to the Hidden Village. There, Hiiragi manages to break free from the Snow God’s belly with the power of love, demonstrating that emotion and connection can overcome even supernatural forces. He’s brought before Gozen, the leader of the Oni, who explains that the Snow Gods were meant to guard the Oni, creating a barrier between their world and humans. However, over time, these gods have become hostile, attacking the Oni instead. The elders believe the Oni are being punished, and a key to their protection lies in the Spirit Mask, which controls the Snow Gods and allows the Oni to stay hidden. The mask is kept on Oni Island and must be worn by someone selfless willing to stay isolated forever to maintain the balance.

Tsumugi develops her own theory: if she destroys the Spirit Mask, the Snow Gods will leave the Oni, believing the gods are angry because the Oni try to control them. Gozen supports her idea, but warns that doing so will expose the Oni to the outside world. Unaware that Shion wears the mask and controls the Snow Gods, Tsumugi’s decision to destroy it triggers a chain of events. Shion, who has been controlling the gods from behind the scenes, is moved by her desire to reunite with her daughter and chooses to command the Snow Gods to bring the Oni into her realm instead of keeping the village hidden. She frees the Oni trapped on Oni Island, but the destruction of the mask causes a catastrophic avalanche, destroying the Oni realm and trapping Tsumugi within it. During this ordeal, Tsumugi experiences a moment of clarity, reflecting on her time with Hiiragi and even traveling back in time to the moment he decided to help her at the bus stop, suggesting that their bond has transcended usual boundaries. Hiiragi’s determination to reunite with Tsumugi allows him to break free from the Snow God’s captivity, and the two are eventually able to escape the collapsing realm, meeting again at the bus stop. Tsumugi explains that, since Hiiragi is no longer an Oni, he cannot access the Hidden Village anymore—only Oni can, now that the balance has been restored. This ending hints that the traditional isolation of the Oni is no longer necessary, as the oppressive barrier between the worlds has been lifted, and both can live freely and openly.