An angel is God's beloved child, but she lives in the human world, but she has gone through hardships; he, who is actually a demon, has loved the wrong person all his life.
Regarding the promise she made, is he looking for her in the next life for love or for the oath to be an enemy of the gods?
Weak angels are not gods, or are gods, but that doesn't matter. The gods are ruthless, and so are humans.