Fia the Deathbed Companion "Fia Shi Fusuma no Otome"

About

A Tarnished who awoke from the slumber of death and travelled to the Lands Between. Fia was once a Deathbed Companion. She would receive the warmth and vigor from a number of champions, and then lay with the remains of an exalted noble, to grant him another chance of life. This was the sole purpose of Fia's existence, and was considered a sacred act in her homeland.

(Source: Elden Ring Wiki)