Aoi Kiryuu is a character from the anime series Kamen Rider Build. She is known for her strong-willed personality and determination to fight against evil forces. Aoi plays a significant role in supporting the main protagonist, Sento Kiryu, as they work together to protect their city from various threats. In the series, Aoi is depicted as a skilled fighter and a loyal friend. Her character development showcases her growth and resilience throughout the story, making her an essential part of the Kamen Rider team. Aoi's interactions with other characters, including Banjou Ryuuga, highlight her importance in the narrative.