A character aside from the main character, irregardless of gender (don't worry, no homo), particularly in an anime that has the most influence in how the plot moves along the series.
Characters that best personify this include: Speedwagon in Jojo's Bizarre Adventure and Kongming in Paripi Koumei.
Speedwagon is best girl
Speedwagon is best girl
by Ayame Ao June 27, 2022