CP Ming Zuo, Itachi Zuo is affectionate. Sasuke died in the original world, and Naruto came to another world through Orochimaru's ninjutsu to exist as Uzumaki Menma. So Naruto has been protecting Sasuke in order to make up for his regrets, hoping that he can live a truly happy life without regrets. The initial age setting is that Naruto is the same age as Itachi, and the age difference between him and Sasuke is 5 years.
Intention: Lonely souls are finally redeemed.