OVA
Description
Terumi, a high school student enduring relentless bullying due to her perceived homeliness and timid nature, secretly harbors romantic feelings for her childhood friend, Kouichi. An ancient dragon lord approaches her, offering transformation into a beautiful, popular individual in exchange for allowing the entity possession of her body. Desperate to escape torment and capture Kouichi's attention, Terumi accepts.
Following the pact, Terumi's physical appearance changes, though her new design is inconsistently portrayed as visually attractive compared to others despite the narrative establishing her initial unattractiveness. Empowered by the dragon's influence, she enacts violent retribution against her former bullies, explicitly described as "ripping apart the souls" of her classmates, demonstrating the dragon's destructive power channeled through her.
Simultaneously, Kouichi is approached by the Shinto god Susanoo, who seeks possession of his body to combat the dragon threat. Kouichi reluctantly becomes the vessel for Susanoo (Takegami), the titular Guardian of Darkness. This sets the possessed Terumi and Kouichi/Susanoo into direct conflict, with the dragon fueling Terumi's actions while Kouichi/Susanoo fights to defeat the dragons threatening humanity.
The priestess Sayoko intervenes, revealing to Kouichi/Susanoo the ongoing war between gods and the entangled prophecy. She discloses a critical consequence: destroying the dragon lord possessing Terumi necessitates the death of Kouichi's host body. This forces Kouichi to grapple with fulfilling his destined role while seeking a way to save Terumi's life.
Terumi's agency diminishes significantly under possession. Her arc centers on the internal and external struggle between her original self and the dragon's control. Kouichi/Susanoo confronts her directly during the climactic battles against the dragons. The narrative concludes with Kouichi striving to defeat the dragon spirits endangering the world while simultaneously attempting to sever the dragon's hold over Terumi to spare her life, though the ultimate success of this effort remains unresolved.
Following the pact, Terumi's physical appearance changes, though her new design is inconsistently portrayed as visually attractive compared to others despite the narrative establishing her initial unattractiveness. Empowered by the dragon's influence, she enacts violent retribution against her former bullies, explicitly described as "ripping apart the souls" of her classmates, demonstrating the dragon's destructive power channeled through her.
Simultaneously, Kouichi is approached by the Shinto god Susanoo, who seeks possession of his body to combat the dragon threat. Kouichi reluctantly becomes the vessel for Susanoo (Takegami), the titular Guardian of Darkness. This sets the possessed Terumi and Kouichi/Susanoo into direct conflict, with the dragon fueling Terumi's actions while Kouichi/Susanoo fights to defeat the dragons threatening humanity.
The priestess Sayoko intervenes, revealing to Kouichi/Susanoo the ongoing war between gods and the entangled prophecy. She discloses a critical consequence: destroying the dragon lord possessing Terumi necessitates the death of Kouichi's host body. This forces Kouichi to grapple with fulfilling his destined role while seeking a way to save Terumi's life.
Terumi's agency diminishes significantly under possession. Her arc centers on the internal and external struggle between her original self and the dragon's control. Kouichi/Susanoo confronts her directly during the climactic battles against the dragons. The narrative concludes with Kouichi striving to defeat the dragon spirits endangering the world while simultaneously attempting to sever the dragon's hold over Terumi to spare her life, though the ultimate success of this effort remains unresolved.