Aoi Kanzaki is a supporting character in the anime and manga series Kimetsu no Yaiba (Demon Slayer). She works as an attendant at the Butterfly Mansion, where she assists in caring for injured Demon Slayers and helps with their rehabilitation. Although she completed the Final Selection, Aoi chose not to fight demons directly due to her fears, instead dedicating herself to supporting others. Her practical attitude and dedication make her an essential part of the support team, providing both medical care and emotional encouragement to the main characters.