Author Note: Otōto means little brother and Ani-go mean Elder brother in Japanese. I do not own Naruto or any of the character affiliated with this show and make no money out of this at all. The plot is entirely made up.
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A fourteen year old Sasuke was curled up in his bed sniffling and coughing covers pulled up over his head. He had the flu and felt really bad; the worst thing was no one seemed to care. The only person who paid any attention to him ever was his brother and he was away on some mission.
Unbeknown to him his elder brother Itatchi had sensed he was needed back home and had turned right around without a word and headed back. The other nins and the man they were escorting shouted at him in protest but he didn't care one bit. He knew his brother needed him and be dammed if he was going to let him down. After all the shit they had been through Itatchi had promised he would be there for him whenever he needed him and he was not going to break that promise now.
As he flit through the trees getting closer and closer to the village he could sense his little brother was very unwell and felt the heat, the fever his brother must be suffering.
He soon entered the village and rushed to the Uchiha compound through the corridors scaring their servants and butlers in the process.
He entered Sasuke's room slowly and closed the door quietly. Shrugging of his over cloak he walked to the bed seeing his small Otōto whimpering and sweating in his bed.
The sight upset him greatly and he peeled back the sticky covers and said softly to Sasuke that he was with him now and not to fret.
Itatchi got Sasuke out of bed and ran him a bath stripping him of the sweaty clothes and put him in the bath while he set about changing his bed covers and opening a window to bring some fresh air into the room.
Once this was done Itatchi helped a sleepy Sasuke back into bed but propped him up on pillows putting the covers over his legs and said to stay like that while he made him something easy to eat, even if you're ill you still need to eat.
Itatchi returned and smiled at the sight of Sasuke propped up on the pillows dosing trying to keep awake. He bout his head up and dipped the spoon into the bowl of vegetable soup he had made for him and encouraged him to eat it. After what must have been half an hour the soup was finished and Sasuke was finally allowed to lay down and sleep.
Itatchi stayed and watched over him dabbing his forehead with a cloth as he whimpered in his sleep dreaming of god knows what, things that fevers bout up.
This must have gone on for most of the week. Itatchi had to contend with his father bothering them and then the people he had left but he never once left his brothers room for then a few minutes.
One breezy night at around two in the morning Sasuke finally woke from his feverish state. He groaned and rubbed his eyes sitting up he looked around and saw his brother sitting next to his bed head resting on it asleep but it was clear to him that his brother had taken care of him.
Sasuke smiled and shook Itatchi's arm to wake him and smiled at him.
"Hey Ani-go, you took good care of me didn't you?" he asked softly.
Itatchi stretched and nodded "i promised you I would never leave you an I won't ever break that promise." He said rubbing Sasuke's hand.
"Thank you so much. I love you Ani-go." He said.