I'm Uchiha Ling, the clan's acknowledged dead last.
But in truth, I started out with a max-level Mangekyo Sharingan and an Evolution System.
My daily routine: tag along while Sasuke gets beaten up, watch Naruto eat ramen, and secretly grind rogue ninja and Akatsuki members like monsters in a game.
Sasuke: "I'll kill that man, no matter what!"
Me (nodding): "Yeah, yeah, go for it. I'll kill Danzo first so you can get some practice."
Naruto: "I'm going to become Hokage!"
Me (encouragingly): "Sure, sure. I'll take care of Pain for you first."
When the Otsutsuki arrived and everyone was despairing,
I yawned and got up from the dango shop.
"Well, looks like my days of slacking off are over."
The Kage: "Who are you, anyway?!"
I revealed my Eternal Mangekyo Sharingan. "Just a powerful mastermind passing through."
It's all data, several times in one chapter
Not paying much attention to details: Naruto's parents died when he was born