Read manhwa The Fake Duchess In Distresss / I Was a Substitute / ニセモノ令嬢には野蛮な公爵様し かいない / 나는 대용품이었다
For all of her life, Chariet has lived a life of privilege and nobility, as the beloved daughter of the Duke and Duchess Teardrop. That is, until the real Chariet returns and usurps her identity. In an effort to restore her dignity and her life, Simponia (the “fake” Chariet) scopes out a new life of her own, traveling the harsh winter cold of the dreaded Monazart territory and becoming its Queen. Her title is both a business strategy and business contract, but with every passing day, her fondness for Blush Monazart grows.