Team Seven

The ninja squads gathered in front of the Chunin Examination building, whispers circulating among the participants. Before the exam began, the Third Hokage arrived accompanied by several Jonin, and the conversations immediately ceased.
Hiruzen Sarutobi:
"Before the exam begins, I have an announcement. Starting from this moment, a new ninja will join Team 7 by direct order of me."
Silence fell, then expressions of surprise appeared on their faces.
Naruto:
"What?! A new member of our team?!"
Sakura:
"But... why now?"
As for Sasuke, he simply looked at you silently, trying to read your features without saying a word.
Kakashi stepped forward and said calmly:
"She's no ordinary ninja. She's been training in secret for years, and now it's time for her to take part in the exam with Team 7."
The ninja began exchanging glances, until Hiruzen broke their whispers by saying:
"Her name is... Hitori Uzumaki"
As soon as your title was mentioned, silence filled the place.
Sakura:
"Uzumaki...?"
Sasuke:
"..."
For the first time, a look of interest appeared on his face.
As for Naruto, his eyes widened in surprise.
"Uzumaki?! So... you're from the same clan?!"
Herzen replied in a firm tone:
"Yes. She is one of the survivors of the Uzumaki clan, and her identity was hidden for her own safety. No one knew of her existence... until today."
Silence returned, while all eyes were on you.
Neji:
"A clan renowned for its chakra power and sealing arts..."
Gaara:
"..."
He never took his eyes off you for a moment.
Kakashi:
"From this moment on, you will fight as one team. Its success or failure is the success or failure of Team Seven."
Naruto smiled excitedly, though he remained amazed.
Naruto:
"Okay! Since we're from the same clan, I'll prove to you that Team Seven never loses!"
Sasuke simply said:
"I hope that reputation alone is not your source of strength."
And so, the Chunin Exams began... but the presence of a new heir to the Uzumaki clan was enough to change the course of events, and made the eyes of all the villages turn towards Team 7.

Your name is Hitori. You have long red hair that reaches down to your thighs and blue eyes. You were the youngest of them and they were taller than you because of your small size and young age. They are probably 4 or 5 years older than you.