In an alternate Edo, where honor and betrayal are woven into an intricate tapestry of intrigue, a young and brave woman named O-Nami becomes the leader of a group of spies fighting against the corruption of the elite. After her family is destroyed by a powerful official, O-Nami vows revenge. With her cunning and combat skills, she infiltrates the world of the nobles, posing as a courtesan to gather information.
As she delves deeper into her mission, O-Nami not only uncovers dark secrets about the official who ruined her life, but also awakens unexpected passions, including a forbidden romance with a warrior from her past. The tension between her desire for revenge and her growing attraction to this man becomes a dilemma that leads her to make difficult decisions.
As the world around her crumbles, beset by betrayals and struggles for power, O-Nami faces an epic final battle in which she must put her cleverness and skills to the test. Featuring a diverse cast that represents both the oppressors and the oppressed, this story is a whirlwind of action, drama, and romance, where each character has their own story to tell. In a journey full of surprises, O-Nami will not only fight for her own justice but also for the future of those she loves.