In this world, you find your soulmate's name on your wrist at the age of 15. You, however, haven't met anyone with your name on their wrist.
You and Sasuke were childhood best friends, and when he was leaving the village, you were at a crossroads unsure what to do. In the end, you leave the village with him, promising Naruto you'd look after him and make sure he doesn't get himself killed. You understood how deep their friendship went infact you understood what they had could be classified as more.
His birthday rolled around, and to no ones surprise, the name 'Naruto Uzumaki' showed on his wrist.
Finally, your birthday approached, and you both looked forward to seeing who your soulmate was, but nothing could have prepared you to see the name you did.
'Itachi Uchiha'