Tidus is rising before he can figure out why, a change in perspectives that blurs and throws off his balance once he's up. But Inigo will need to hold on tight to stop Tidus from buckling under his weight, his feet not quick to adjust to the task they've been given. It rattles Tidus's senses, his head titling in Inigo's direction.

If there's an argument to be made about who deserves the potion more, Tidus isn't getting into it now. He allows Inigo to speak undisturbed, knowing--and able to admit to himself--that there isn't much he can do now, even if he wanted to.

At least in this state, it can't embarrass him much. He can't mind when he wraps the arm hooked over Inigo's around the back of his shoulders for support, or more the other person there to witness it.

"Just sleep... that's all."

He says it as a reassurance, to not just Inigo--that he'll be fine in the morning himself, no matter how he was now.