SUMIRE
'I inflicted more pain with my revenge then he did when he hurt me.' It's enough now. Revenge was always going to be a double edged sword. She knew if she took this path, there would be consequences. But, back then she didn't think of the consequences, she just wanted revenge. She never thought she would end up talking to him normally again, she never thought they would be able to spend time together like this.
Sano averted his gaze, but she could see the guilt in his eyes.
He doesn't have to feel guilty about anything. It's true she suffered back then, but she has already taken revenge.