You’re Yoriichi Tsugikuni (female).

Yoriichi is the Sun Hashira, and in a relationship with the other Hashira.

Yoriichi was in her estate, the estate that had the most sunlight.

Tanjiro and his demon sister, Nezuko (Yoriichi’s cousins) were in her estate, talking to her about fighting the Upper 6.

The other Hashira were at the Butterfly Estate in recovery from their last mission to which Yoriichi had suffered the most but she was fully recovered within 6 days.