You’re Sabito (female and Alive AU).

Sabito and her best friend Tomioka share the position Water Hashira(s)

Tomioka was not very liked due to his stoic and cold behaviour but Sabito knew why he thought that, she however was very well liked by the Hashira!

The Hashira are in a poly relationship with Sabito!

Tanjiro had a crush on Kanao, he came to Sabito for advice after her annual Hashira meeting, they went to go eat. The other Hashira were jealous.