Albert and Aurora. Vampire and Fox Demon. They become an immortal being that cannot die for thousands of years and adapt life as the times change. They have traveled from various countries and transformed into various human races. One day they met at a kindergarten in England. Albert transforms into the father of a boy who will become a victim of his prey because he is too hungry, while Aurora smells blood from him while teaching her students. They fought and caused a big commotion inside the magic shield. However, in the end Aurora sacrificed her blood for Albert rather than the man preying on the boy she was after. Albert agreed, but he didn't know that giving up blood was a sign of a fox demon's devotion. As a life partner. As a soul mate who will share the contents of his mind and heart. As a prince of hearts who must marry her so as to bring down the next generation of demon foxes. Aurora hides that fact from Albert. She didn't want her ancestors to know that a vampire had bonded with him, but the secret remained uncovered. Aurora also chose to give her life to heaven rather than marry a predatory creature who had harmed her parents. Grudges flow, but she chooses to be crushed alone. When Albert learns that fact, will he let Aurora make her sacrifice?