Reikoku Vampire Koushaku no Ikenie ni Naru Hazu ga Dekiai Saremashita.

Suddenly summoned to another world, Morikawa Ringo finds herself surrounded by wild beasts and in mortal danger! At that moment, a vampire marquis appears and makes her an offer: “Bear my child.” Shut away in his castle to expand the vampire bloodline, Ringo desperately tries to escape the cruel, cold-hearted vampire—but their bedroom chemistry is second to none…?! Vampire × True Love × Baby-Making?! The dark fantasy begins!.