Misuzu strolled down the dimly lit hospital corridor, the rhythmic click of her high-heeled footsteps echoing around her. Behind the discreetly closed doors, patients lay in their beds, unaware of the secret activities that unfolded in their midst. On this particular night, Misuzu’s colleagues, Rika Souhama and Mie Nakamaru, couldn’t shake off a sense of suspicion. It was during their shared night shift, and they couldn’t help but notice Misuzu’s peculiar behavior. Driven by curiosity, Rika decided to discreetly follow Misuzu as she made her rounds. Leaving her fiancé, Shinichi, who happened to be a assigned doctor, behind, Rika ventured into the shadows, determined to uncover the truth. As Rika silently tiptoed down the corridor, she found herself standing outside a private room where Mie’s fiancé had suddenly fallen ill. The door was slightly ajar, inviting Rika to take a peek. With a mix of anticipation and trepidation, she pushed the door open, revealing a scene that would forever change her perception of Misuzu.