Ko Aoki is a fictional character from the anime and manga series Bakuman. She is a talented mangaka known for her romantic shoujo manga work. Initially portrayed as somewhat distant and serious, Ko gradually reveals a more compassionate and determined side. Her journey in the series includes her growth as an artist and her interactions with other creators. Ko plays a significant role in the series as a rival and later a friend to the main characters, Mashiro and Takagi, contributing to their creative journey and personal development.