[ He frowns at that. They've already been discussing him, is that what he's saying? What unique circumstances, exactly? -- But when the focus moves back to his sister, he can't quite move back to it.

It's a little terrible to use that phrase for Vanya, who spent her entire life drugged and convinced she didn't have anything special about her, who just recovered from amnesia, who knows she was the cause of two apocalypses that they had to avert... so. He'd prefer to use a different one. ]

I'd like to keep her safe. [ What that means is hard to put into words. It's a delicate situation that he doesn't expect him to understand. ] I'll tell her what she needs to know.

[ He doesn't want to keep things from her. She's his sister, and the only person he can really trust. So telling this now to Mingyu is something he has to debate up until it comes out of his mouth. ]

She's like me, but her powers are less predictable. When she gets upset... [ It's bad. ] I just need to her to be calm and we'll work on it.