Satoko dreams of marrying a noble but can’t escape the assassin who has her within his sights.

Afflicted with a heart condition, Meiji-era noblewoman Satoko is determined to secure a marriage that will benefit her family before she dies. But before she can realize her goal, she’s targeted by a mysterious assassin named Shinpei. In a last-ditch effort to save her life, she asks her would-be murderer to marry her. Her proposal isn’t sincere, but unfortunately for her, Shinpei loves as intensely as he kills. Can Satoko find a way to break the engagement without losing her life?

Satoko is kidnapped and imprisoned on an isle of prostitutes. To escape, she and Shinpei come up with a plan for her to pose as a prostitute, but there’s one problem. Shinpei forbids her from letting another man touch her, vowing that he will be the only one to protect her. How can Satoko pull off a convincing performance with such a contradictory restriction in place?