One day, an ordinary young lady named Nissa had her 13th birthday. However, while buying gifts, her parents borrowed money from Hanzai Inc. After all of it was consumed, they assassinated her parents, kidnapped her, and moved their business to Paris, France. They kept the child in the basement, training her to assassinate people. Day after day, year after year, Nissa was finally 20. They decided to send her back to Korea however before they would, they would dress her up in a signature indigo dress, black tights, and black flats. However, they had a complication. The name of Ms. Nissa James was on the amber alert from 7 years ago as a missing child, and if the incorporation went to the airport with Nissa James, the damn police would come and they would arrest her guardians. So they decided to change her name. They had many ideas, but they finally decided on Ivy Hanzai, codename "Indigo". As they scheduled her a seat on the plane, it fully sunk in that she had to murder people to make sure she wouldn't be. And she was ok with it. "Anything to survive.", she thought. Then again, it's the survival of the fittest. If you're not strong enough, you die.