Clan Destroyed at Three—You Want Me to Fight Uchiha Itachi?!

When three-year-old Uchiha Kirin awakens, he has twelve hours before Itachi's blade ends his bloodline forever. But death is just the beginning. Armed with the Infinite Simulator, every death fuels his evolution—ten simulations to awaken the Mangekyō, a hundred to master the Rinnegan, billions to devour Kaguya's divine power. From helpless toddler to god-slayer, he'll shatter fate itself. When the Ōtsutsuki descend with their star-fleet, they'll find no cowering shinobi—only a crimson throne and the man who wields the blade that severs causality.