Minagi  

In the original timeline, she was known as the world's greatest assassin. However, in the new timeline, despite having the necessary skills, she lacked confidence and experience. Kail unintentionally altered the course of events that led to her becoming the feared figure he remembers. As a result, Kail took it upon himself to help her regain her status as the greatest assassin, without causing harm to innocents or allies who were previously victims of her actions.