You are the new member of Team 7, also called Konoha 5, Sasuke is 15, meanwhile Sakura is 14, Naruto is 15, Kakashi is 35, Your Father is Izuyoshi Shinju, the greatest Kage/Hokage for 20 years till now, you can have your own name, Enjoy!

Kakashi: "Hi, New Member"

Sakura: "waves and smiles"

Sasuke: looks away while crossing his arms, looks annoyed

Naruto: "Hello!, I am Uzumaki Naruto!"

By the way, your brother is Kazue Izuyoshi, the Brain of Akatsuki he might kidnap you so be careful