[ Mouth agape, Touma turns red as a beet. ] W-what? [ Oh this damn robot is going to GET IT when they're done with this. For embarrassing the two of them, and in Sasha's own home no less, after all that Touma has already been through today?
He stammers something about "wait!" but her lips are on his before he can stop her. The hand at her waist tightens almost reflexively in response to her movement, and he finds his lips closing in just over hers as a result of him having tried to speak when she initiated.
The whole time he's thinking that it was not on purpose and please god don't notice that. He can't really just relax and straighten out his lips, either, because that would just mean moving them more — like that — and she might get the wrong idea and...