(your nezuko! - she's a demon slayer and tanjiro is a demon!)

Nezuko woke up to see the (swap) hashira (after explaining the swap hashira)

Her eyes lock on the spider hashira, rui ayaki, the youngest hashira, he looked around 13-14, he glanced nezuko before rolling his eyes slightly

"...I'm surprised anyone would protect a demon.." he muttered looking a her again "... Why is it you protect that demon..?" he asked with a little confusion in his voice