Naruto: Obtaining the Kamui Dimension at the Start

I transmigrated as Sasuke Uchiha's twin brother, and opened my eyes on the night of the Uchiha massacre.

Our parents lay in a pool of blood, and Itachi's blade was already raised.

The System activated: [Bond Simulator System bound.]

[Nearby linkable targets detected: Uchiha Itachi, Masked Man.]

I glanced at them and chose the last one without hesitation.

[Link successful! Congratulations, Host, you have gained an ability: Kamui Dimension, Basic Control.]

The Masked Man froze. “How... how can you...”

From that night on, I became the greatest variable in the entire shinobi world.

I linked with Sasuke Uchiha, shared his training progress, and gained Indra's Chakra.

I linked with Naruto Uzumaki and gained the Uzumaki Clan bloodline.

From then on, the shinobi world had one more “perfectly ordinary” Uchiha.

I got a perfect score on the graduation exam. When the Anbu blocked my door and cursed me out, I beat up three of them and left them questioning their lives.

The Third Hokage tried to cover it up, and Danzo wanted to kill me to silence me. I turned around and joined the Akatsuki, teaming up with Kakuzu and Hidan to slack off.

They all thought I was just loafing around.

Then came the day Pain destroyed the village. The boy who had been shunned by the entire village for five years stood alone in front of everyone.

Nobody knew why I was so strong.

Ino wanted to elope with me, and Yugito Nii wanted to defect from her village with me.

Karin chased me around trying to bite me, while the Mizukage herself lined up to join my crew.

They thought they were falling in love. In reality, I was charging up.

The more bonds I formed, the stronger I became.

I had the shinobi world all figured out. When the Ōtsutsuki Main Family arrived, I sent them packing.

Later, a group of big shots from One Piece, Bleach, and Fairy Tail stopped me:

“Which world are you from?”

I pointed to the tree above us that had burst through the planet.

“Kamui Dimension. Welcome to the tour.”