She came to kill him.
He came to die.
After not seeing each other for three years, she has changed her face, but he has not changed her heart.
She put the knife against his heart and he said, "Do it, this is the last thing I can give you."
The moment she stabbed it in, she realized——
It turns out that the most painful thing is never to hate the wrong person, but to finally love the right person, but it is too late.