Atropos.

The story revolves around a young girl who is just 17 years old. Unfortunately, her life takes a dramatic turn when she is left at an orphanage, which is known for training children to be assassins. The girl's family has a dark history and is connected to the mafia. However, before the girl was even born, her mother had to flee the family due to threats from the girl's father's father.
When the girl was born, her mother left her at the orphanage and disappeared, leaving the girl to grow up without any knowledge of her family's past. As she grows older, the girl becomes more familiar with her surroundings and the nature of the orphanage. The girl is trained in various skills, including combat, espionage, and assassination, making her a formidable weapon.
One day, when the girl is around 17 years old, she is assigned a mission at a club. During the mission, she sees someone who looks exactly like her, which leads her to question her past and her true identity. She starts to dig deeper into her family's history, hoping to unravel the truth about her mother's disappearance and her own connection to the mafia.