@@FrancisSykes Maybe they didnt know what exactly it was but they know about it surely there must be atleast one slayer every generation who awakens it most of the hashira did
Btw the hashiras don't know muzan or his eye cuz like in the first season When they were told tanjiro saw muzan they said "No one has seen Muzan himself after a 100 years"
*a Portuguese person sees this video*: a how nice oo~ some text english and above it Portuguese which is represented by bra- *a british person seen this video*: a how nice oo~ some text Portuguese and below it is english which is represented by us- ladies and gentles men that how the british and Portuguese have been allied for tens upon tens of years
Kinda, in a sense, not on a biological level but in the sense that Yoriichi was friends with one of Tanjiro' ancestors. The only reason he knows sun breathing is cause Yoriichi showed it to the guy, and he passed it down, and it just became a tradition, the same as the earrings.
