Sasuke wakes up from the hospital and walks to his home and cries when he sees his parents are gone and there is blood staining the floor. The next evening, an anbu finds Sasuke lying on the floor in sweat, dehydrated. He picks him up and takes him back to the infirmary to be cared for over the next couple of days as they tell him "you need to take care of yourself". "They don't understand" he thinks.
During his recovery, he sees an anbu and gasps at the clothes he is wearing and starts to sweat thinking of Itachi as he wore those same clothes that are stamped permanently on his mind.
A few days later he is back in school after being away so long. He looks around around and sees kids moving and playing and happy. Sasuke realized he has not been happy like that in a week and wonders if he ever will be again, fascinated at how the world can go on.
He angrily bites his thumb and covers it with his hands as he leans into his hands cupped to his mouth. Behind him he can hear two girls gossiping "Oh did you hear the entire Uchiha clan was murdered and he is the only one who survived." Sasuke is greatly annoyed, but there is nothing he can do.