[Unfortunately, he's also easy to read in his emotions. It's clear he's bothered by her continual disbelief in herself. A quiet sigh, and there's still optimism in his expression even if it's more serious now.]

I hope you gain a supportive shinki too. I do my best to support her, because she also supports me.

[He truly means that as well. For her, and about Mai.]

But I also don't want to upset you, and I can tell this isn't something I'm going to change your mind on right now. But think about it, alright? And we can switch the topic to something else too, if you want.