Naruto: Kaguya's Maid

A normal girl reincarnated as Kaguya's maid. She has to somehow convince Kaguya to give her chakra like Hagoromo did, and guide her to establish a powerful clan of descendants instead of White Zetsus.

She will become the nanny of Hagoromo and Hamura, and instead of hiding the danger of Otsutsukis from them and letting them be convinced by Toad Sage, make her very loyal and understanding to Kaguya while also preventing Kaguya from sucking out all life.