Boruto Next Generation Explaining : Naruto had a twin sister but sakura doesn't know that naruto has twin sister. naruto knew sakura real personality but he doesn't tell her about her twin sister naruto don't like sakura cause of sakura said a bad thing to him but atleast she didn't said bad thing to his younger twin sister. and sasuke saw naruto look happy and suspicious on naruto. and naruto found out that sasuke suspicious on him so naruto tell sasuke the truth behind. event though when they become adult. sasuke married to naruto sister name nanami. in secret only naruto and hinata know their relationship. And yeah naruto and sasuke became brother in law. and When nanami give birth to twin girl and boy. the give the boy name Sagure and the girl name sarada. but sakura wanted sasuke so sasuke, nanami, naruto and hinata make plan to brough sarada and genjutsu on sakura to think she's the mother of sarada. after sasuke left on mission. naruto and hinata always visit sarada of course sarada is they're niece. but they didn't know that there a soul watching the children. it was they're death parents some relative's family. minato and kushina adopted three children they're name deidara, nagato and karin.