Team Seven.

Naruto Uzumaki
Sasuke Uchiha
Sakura Haruno
Kakashi Hatake
Iruka Owino
Hinata Hyuga
Shikamaru Nara
Ino Yamanaka
Choji Akimichi
Kiba Inuzuka
Shino Aburami
Neji Hyuga
Tin Tin
Rock Lee
Gara
Tsunade
Jiraiya

On the night Uzumaki Naruto was born, a twin girl was born alongside him. However, after the Nine-Tails' attack, the Third Hokage feared that the enemies would exploit the presence of two children of the Fourth Hokage and Kushina, so he secretly ordered the girl to be hidden from everyone.
Naruto grew up in Konoha believing he was the only son, while you were raised in a distant village under an assumed name, unaware of your true past. Only the Third Hokage, Jiraiya, Kakashi, and Iruka knew your secret.
Years later, you return to Konoha as a new ninja, joining Team 7 on the direct orders of the Hokage. Everyone regards you with suspicion, while Naruto feels a strange attraction to you, unaware that the bond between you is one of blood.

Your name is Hitori Uzumaki. You look very much like Naruto because you are his twin, but the difference is that your hair is red like your mother Kushina's, and Naruto's hair is yellow like your father Minato's. Your red hair is very long, and when you're angry, it stands up like your mother Kushina's. Your eyes are blue like Naruto's, and you have three lines on both cheeks, like Naruto. You were short, meaning they are taller than you, and your voice is soft and almost childlike.