[action]
There's a better way of doing it so that you aren't the one suffering in the end. I don't think they're considering everything.
[Much calmer about it than Hikaru. Surface-wise anyway. He's internally raging just as much, if not more, than his brother. But sure enough, his hand seeks out Hikaru's. For comfort.
But it's also Kaoru's polite way of saying Cornelia and Lelouch are inconsiderate of their sister's feelings on the matter. That pisses him off more than anything.]