The little fox was exiled to the world due to the curse of his family. He was labeled as fierce and sensitive. When he met a curious boy who was fearless since childhood, she didn't know why he only cured her, but he never hid his love for her in his heart.
"Little fox, marry me."
"But humans and demons cannot marry."
"That won't stop me. Even if I am cursed and die and become a ghost, the worst I can do is become a ghost and marry you again. When I am reincarnated as a demon, I can use my three lives as a betrothal gift to marry you."
Concept: Love must be sweet, but experience must be bitter