He was born a demon and she was born a saint. Their identities are different. The devil was born without the seven emotions. The saint taught others that there are eight sufferings: birth, old age, illness, death, resentment, separation from love, flaming five yin, and failure to seek. Out of love arises sorrow, out of love arises fear. If you are separated from the one you love, you will have no worries and no fears. This is your fate and it cannot be reversed.
Concept: I had a sudden inspiration after reading the novel "Fujiro Weedada"