Zarah and The Seven Apocalyptic Princes

In a world where humanity had perished, Zarah Winters stood as the sole survivor after eliminating the notorious sixth prince of the underworld. The cunning and manipulative seventh prince, known as Verphegor, saw value in keeping her alive for his own amusement. He proposed a deal: he would send her back through time, allowing her to retain all the memories of their encounter and utilize them to alter the course of events. Born into a family of skilled hunters, Zarah possessed unique abilities without realizing it. However, due to personal circumstances, she had left the academy without completing her training. During the apocalyptic times, she discovered a hidden strength within herself - she was a siphon, capable of extracting power from demons by killing them. Drawn by the untapped potential, Zarah decided to take a chance on Verphegor's proposal. Yet, trusting a prince from the depths of Hell was a risky decision. As she grappled with the knowledge of her newfound abilities, she wondered if there was a way to harness them for the greater good of humanity, despite the demon's ulterior motives.