Akuyaku Reijou desu ga, Watashi o Anata no Seidorei ni Shite Kudasai!

[ From scanlation Galaxy Degen Scans ] :

The Crown Prince publicly announces that their engagement is annulled and that she is to be banished. All my efforts as her attendant to avoid such a scenario were all in vain, unable to avoid the condemnation flag, my villainess suggested that she wanted to be my sex slave?
"Please break my hymen! I'm Kaito's sex slave after all. Please let out a lot in my baby room." The young lady who was known as the "Ice Lady," her face twisted with pleasure, is begging me to come inside her, her hymen broken on a bed in a cheap inn. That haughty aristocratic noblewoman is as good as dead. Now I'm resolved to give her the best first-experience possible. "AHH! I'm cumming! Fine, I'll make you my sex slave as you wish!"
This is the story of Kite, a reincarnated squire who knew her doomed fate, and Chris, a villainess lady who becomes a happy sex slave