Utsukushii Hanryo

Cheryl Olsent is a work of art created by God. Everyone admires her beauty, but her "husband" is none other than the daughter of an aristocrat, Sera Dibras. Because of her beauty, Cheryl has led a life without freedom, using herself as a tool to satisfy someone else's desires. But for some reason, she finds herself drawn to her mysterious companion, Sera, who is infatuated with her and treats her with care.

(Source: Hakusensha, translated)