In the third Kimetsu no Yaiba light novel, Sanemi goes to the butterfly mansion to get his wounds treated. ... He likes Kanae.” On Sanemi's and Shinobu's pages, it is stated that Sanemi regularly asks Shinobu how she's doing when they meet, considering how she is Kanae's sister.

What is Sanemi and Kanae relationship?

Sanemi and Kanae's first and only known canon interaction was when the former got angry at Kagaya, accusing the their leader that he didn't value the lives and efforts of the demon slayers who die for their cause.

How old was Kanao When Kanae died?

At the age of 14, she became the master of the Butterfly Estate in Kanae's place, since Kanae died at age 17.