It's a well-known fact that The Seven Deadly Sins were once the most fearsome warriors in the kingdom of Liones. No one would have dared step in their way, but nothing good can ever last. A decade ago, the Sins vanished, and a decade ago, the guilt for the most heinous crime a sin could commit was pinned on the unknown sin. It was truly a travesty... Yet the eighth sin had no reason to protest this... At least, she hadn't until now. Janis, the Hydra Sin of Deception was coming back, and she would never be hidden again.

Raynuh-Zyll, or Rayn, is a curious young woman with no true purpose in life. She wanders about, from place to place, observing and never interfering. What happens when she stumbles across a few familiar faces?