The story begins with Hanna, a diligent office worker in Osaka, facing unsettling encounters with a stalker named Ryuji, a former employee obsessed with her. With the help of her close friend Kenji, Hanna overcomes the terrifying nights haunted by Ryuji's constant pursuit, ultimately leading to his capture and removal from her life.
However, peace is short-lived when a new threat emerges in the form of Mr. Hayashi, the new office boss. Though charming at first, Hayashi's interest in Hanna quickly turns into something sinister.
His unsettling behavior escalates, leaving Hanna once again feeling unsafe. Kenji, angered by the harassment Hanna endures, confronts Hayashi in a final, intense showdown, where Kenji nearly takes Hayashi's life in a fit of rage. However, Hanna intervenes, preventing the situation from turning fatal.
In the end, Hayashi leaves the office forever, and Kenji steps into the role of the new boss, with Hanna as his assistant. Together, they ensure that no threats or stalkers will ever harm Hanna again, bringing a sense of closure and safety to her life.
In the heart of Tokyo, Kenji Takahashi's life transforms from the routine to the extraordinary, turning into a chilling narrative of love, obsession, and survival. Working in a dynamic corporate environment, Kenji's world is upended when he meets Yumi, a captivating woman from a different department. Initially, Yumi appears as the epitome of sweetness and attentiveness, but as their relationship evolves, a darker side emerges. Yumi is the quintessential yandere - seemingly gentle and loving, yet underneath lies a deeply disturbed and obsessive personality.
Their whirlwind romance quickly spirals into a suffocating nightmare as Yumi's jealousy becomes all-consuming. Her love, once tender, morphs into a possessive trap, holding Kenji captive not just emotionally but physically. What starts as a fairy-tale romance soon reveals its cracks, descending into a harrowing tale of control and captivity.