[Past life and present life + falling in love and killing each other + running in both directions + double cleansing]
She saved him when he was nine!
He also saved her when she was nine years old!
It was as if fate was playing a joke on them, causing them to meet the god in each other's hearts at the wrong time and without knowing it, and this god eventually became each other's inner demon!
The Buddha said: "All effects arise from causes, and all retributions arise from karma."
But it is clear that they are not at fault for each other, so why are they destined to live together forever?
Very nice, good ending.