Naruto: From the Start, Konoha Goes Slack, and the Uchiha Are Masters of Keeping Their Heads Down

Uchiha Jin has lived two lives, and his greatest dream is to be a couch potato. Unfortunately, he transmigrates into Konoha's unluckiest man. His parents were die-hard followers of Kagami Uchiha and were purged by the higher-ups. His clan calls him useless, while the village treats him as cannon fodder. When the Third Shinobi World War breaks out, the twelve-year-old is kicked straight onto the battlefield. Just as he despairs, the Lie Flat and Slack Off System awakens: the more completely he lies flat, the faster his strength grows. Even moving feels like too much effort.

From then on, he acts like a good-for-nothing by day and takes it easy in bed at night, counting experience points. His classmate Kakashi sees him camped outside Ichiraku Ramen every day and can't help suspecting he's a spy. The genius Shisui treats him like a younger brother and insists on making him help restore the clan. The Third Hokage gives up on him after reading his file, while Danzo tries to put him to use and gets stopped.

Everyone thinks this Uchiha is utterly hopeless. Only he knows that when the night of the massacre arrives, he'll turn on his heel and run. But the more he tries to keep his head down, the bigger things get: he can't keep his Three-Tomoe Sharingan hidden, White Zetsu shows up, and even Kumogakure ends up taking the blame for a huge mess.

He's also seen through a truth no one dares speak aloud: the Uchiha were doomed to be wiped out not because they planned a coup, but because they stood in the way of the higher-ups and the other clans lining their pockets. When a whale falls, all things thrive. Konoha has had its eye on this prize for a long time.