How Could a Hidden Blade Settle for Being a Delicate Flower?

[Amnesiac Female Assassin x Cunning, Charming Gentleman] Join Forces to Solve Cases

Qing Yu has lost her memory, and only three things remain in her mind: she has killed people, she did it with ruthless efficiency, and she wants to stab the man before her who is so deeply in love with her.

Gu Yu, the Duke of Ying's legitimate grandson, works for the Ministry of Justice. Handsome and gentle, he takes her, now suffering from amnesia, back to the duke's estate and cares for her attentively.

Qing Yu is convinced she's an assassin with blood on her hands, and doesn't dare accept the full force of his affections.

As one murder case follows another, she relies on instincts etched into her bones to uncover the clues, assuming they're leftover skills from her days as an assassin.

Her wedding day draws ever closer. With an assassin's past, she's about to marry Gu Yu, who works for the Ministry of Justice. It all seems absurd.

Qing Yu's thoughts: If he finds out one day that I'm a murderer, could our bond as husband and wife buy me a chance to survive?

Gu Yu's thoughts: If she regains her memory one day, will our bond as husband and wife make her hesitate to kill me?

So, is she an assassin? And is he really Gu Yu?