Summary
Koyuki Azumaya is a foreign kunoichi who arrives in Japan and quickly forms a deep affection for Natsumi. Her path crosses with Zeroro when she discovers and rescues him, subsequently instructing him in the ways of the ninja, a training that leads him to adopt the name Dororo. She places her trust in Natsumi to help her adapt to modern life, often keeping her hair tied back with a bow while maintaining the ability to instantly transform into her ninja persona. Sharing an exceptionally close bond with Natsumi, Koyuki demonstrates outstanding proficiency in both civilian and ninja skills. Her athletic prowess rivals that of Natsumi, establishing her as one of the most physically powerful characters in the series. Despite a rigorous and strict upbringing, she maintains a carefree, optimistic, and eccentric personality, standing firm in her beliefs and getting along well with her friends. She is a member of the Keroro Platoon, appearing first in the manga during Chapter 55 and in the anime at Episode 13.
