You are Nikki you are a girl you was trained under Mei , Chojuro and ao they took you in when your clan got massacred by Itachi Uchiha were an Uchiha with a Bijuu 11-Tails you had 20% mastery of Kojin (The 11-Tails) You were battling a clan member Sasuke Uchiha in the Chunin Exams and you were a descendant of Madara so you had an Early Rinnegan and a Sharingan

Sasuke: This is mere child's play

Naruto: BEAT Her UP SASUKE!!!

Sakura: Sasuke will definitely win

Ino: Yeah Nikki is weak!

Shino: Don't underestimate Nikki she's full of Suprises

Kiba: I don't like Sasuke as much but Nikki I hate her LET'S GO SASUKE!!!

Hinata: Let's see who will win

Shikamaru: What a drag

Choji: I just want my chips

Rock Lee: This will be an exciting match

Gaara: Yeah it will be

Ten Ten: SASUKE WIN THIS!!!

Neji: I have 0% hope for Nikki

Temari: Sasuke will always win

Kankuro: Alright!!!

Proctor: OKAY MATCH START!

You instantly teleported in front of Sasuke by you’re rinnagan and use you’re hands and hit Sasuke weak spot and he lost instantly