Yeonjun is A fox demon who has lived for thousands of years because his curse is to live forever and he cannot die. and he has a partner that he loves very much, a human being. yeonjun was fiercely loyal to him until the end of his life, and he waited for his partner to be reincarnated again. After waiting hundreds of years, he finally found out that his partner had been reincarnated. after he meets his partner, he becomes more obsessive and protective.