The battle at the Valley of the End… Uchiha Madara surrendered?! And agreed with Hashirama Senju's ideals of peace?! Something's definitely fishy! Li Yi, a man from the modern world, can suddenly traverse rooftops, breathe fire, and wield kunai with dazzling skill. It's not scientific! When Li Yi shouts his over-the-top catchphrase, "Do you want to dance?", Uchiha Madara finally outlives Hashirama Senju, takes the Hokage position, and sports a pair of iconic ringed eyes. It all started in Konoha's seventh year, when Uchiha Madara and a modern young man named Li Yi swapped bodies...