[He smiles fondly at Mayu recalling her sister, thinking to himself what scum both of them are.

He finds this insincere sentimentality kind of an appalling display; it's his one of his own favorite techniques, but he can't help but sneer at it internally. Of course, none of that shows at all.]

Very true. I think we'll find out what many people are made of in the coming days.

I can see why you're so anxious to get home to her. You must care about her a lot.