Even after that first bite, he still can't quite tell if he wants to eat or not. It goes down with some difficulty, though whether that's the nausea or the tightness in his throat, Vanitas can't tell. He doesn't quite look at Bruce: it's almost like he starts to, and then aborts it right at the last second, being aware of him in the periphery.

He's given the drink back, but conditioning leads Vanitas to believe its a test, even though Bruce has only ever done exactly what he said he would in the time they've known each other. Regardless, Vanitas doesn't try to take it again, despite the way he itches to covetously move it away from Bruce's reach.

"Maybe that's how it works where you're from," He spears another sausage. "I don't even care about those things. I just wanted it to stop, and the only way I could do that is through joining my heart with his."

It should be stranger, to explain all of this. But what's the point in hiding it? Vanitas had never made it secret what he was after, even when he was faced with Ventus himself. Ushering in the Darkness, the Keyblade War— all of that played second fiddle to Vanitas' desire to feel anything but the endless anguish.

"But I know that won't happen." Not now that the x-Blade is created, especially not now that he's in this place. "I am the shadow that their Light casts. Darkness is who and what I am."

Maybe emboldened by his own commitment to his place in the world, maybe reminded if his true purpose because of the direction this conversation took, Vanitas finally looks back at Bruce and his expression is fixed in such a way that its clear he won't listen to any argument made otherwise.