So! We know this. Kanao Tsuyuri, and Aoi Kanzaki are of the same age Aged 16 - at the start of the series. However, we've got a lot to consider!
Is Kanao really...
Aoi is then shown to be truly in love with Kanao and has begun to see her truly as an equal sister.
Does Tanjiro like Kanao?
Tanjiro and Kanao would later marry and begin...
