SEA-Z: Deadly Poisonous Weapon

Sea-Z is an orphan who has been nurtured into an emotionless person by the country and turned into a shape blade and a last choice by the country. She is alive but with no emotions, she has always lived like a robot all her life, and that is why the country has confidence in her and spends its energy training her. But that was until she met with Detective Jill, a lively man who was tasked to work with her in looking for the killers who were destroying the country. Working together brings them closer as his liveliness brings emotions to her steady life, but what happens when the country finds out their secret weapon who they have nurtured with care has changed and no longer follows their orders?