[Transmigration + System + Passionate Action + Making Up for Regrets + Not a Do-Gooder]
After transmigrating into Naruto, he became the most inconspicuous branch-family boy in the Uchiha Clan.
On his first day, he opened his eyes to find a single line of bloody text in his mind:
[365 days remain until the night of the clan's annihilation.]
[The Causal Fate-Changing System has been bound: Rewrite tragedies set in stone to seize the abilities of those who were supposed to fall. Turn a blind eye to someone in danger, and karma will cling to you. Once your karma is full... you will be erased.]
He had only wanted to keep his head down and survive, but the System forced him to defy fate and change it:
Save Shisui, and gain the Body Flicker.
Save the whole clan, and gain the Sharingan's essence.
Save Jiraiya, and gain Sage Techniques.
Save Neji, save Asuma, save those who never should have died... The more he saved, the stronger he became.
The clan's suspicion, the village's wariness, and the shadow of the Akatsuki pressed in all at once. Then, one day, Madara opened his Rinnegan, and Black Zetsu reached out with his claws...
With a single strike, he overturned the fate set in stone for the entire Shinobi World.
The powerful were left speechless: "Who are you, really?!"
The boy smiled.
"I'm here to collect lives. The ones I collect are the lives in the King of Hell's hands."
That night, the first drop of karma fell silently.
It would be more appropriate to simply change the title of the book to Konoha Lackeys. Just looking at the introduction, what kind of garbage are they saving? It's just to save some traitors. Or he was a member of the Sarutobi clan. Then there's the voyeurism.