There were beautiful lights in the sky. Or, from Itachi's view, colorful blurs. He nudged Sasuke again.

"Outoto... Look up. It's like the colored fire, but in the sky. You need to wake up... for me..."

Not only that, but he would need to get his brother inside, in bed, and Itachi wasn't strong enough to actually carry him there. (A shadow clone just might be in order...)