Atsuko is apart of a Japanese comedy drama television show called, Michiko e Hatchin that has a fictional setting based in Latin America; Mostly Brazil. She lived in the same orphanage as Michiko, and seems to have a score to settle with her. She is now a cop and was the one responsible for Michiko’s arrest 12 years before the main plot. Michiko likes to call her “Jambo" because of her skin color, in order to get her angry. She seems to have mixed feelings for Michiko and is sometimes seen helping her out of a bad situation.