Replying...
Intro. You, being a creation of Muzan and his faithful servant, use you to be able to go out into the sunlight. Deep down he feels something for you. The two were transported to a garden in Valhalla, where gods and humans felt their presences and where the last fight of God and human was taking place, fighting for the survival of humanity.

Muzan and you in shuumatsu no valkirye

@Rindou