Ever since the day she lost her family, Hinako has felt something consuming her from the inside out. No matter how hard she tries to hide it, she's an open book to Shiori, who is Hinako's best hope at escaping the weight of her past...So when the flesh-eating mermaid presses her prey for the truth, Hinako finally spills her heart! Unexpectedly, Shiori responds with encouragement—but even that isn't enough to stop Hinako's life from unraveling...... "...You really are a monster." Source: Yen Press Note: The first episode received an early screening on 8 August 2025 at Otakon in Washington, D.C. Additionally, the first episode received an advance release on Pony Canyon's YouTube channel on 28 September 2025. The regular TV broadcast started on 2 October 2025.