Naruto: Transmigrated as Sasuke, I Can Synthesize Ninjutsu Without Limits

[Naruto] + [System] + [Overpowered] + [Revenge against the Konoha High Command] + [Build a Faction] + [Make Up for Past Regrets] He transmigrates into Naruto and becomes the sole survivor of the Uchiha Clan Massacre: Sasuke Uchiha! Bound to an Infinite Synthesis System! Ninjutsu, Tailed Beasts, Kekkei Genkai: he can fuse them all! His talent is maxed out from the start! Fuse [Three-Tomoe Sharingan] + [Three-Tomoe Sharingan] to obtain the [Mangekyō Sharingan]! Fuse [Indra's Chakra] + [Asura Chakra] to obtain the [Perfect Sage Body]! Fuse [Eternal Mangekyō Sharingan] + [Eternal Mangekyō Sharingan] to obtain the [Perfect Rinnegan]! Fuse [Senjutsu Chakra] + [Cursed Seal of Heaven] to obtain [Pure Senjutsu Chakra]!... As Sasuke grows ever more powerful... “Foolish older brother, you'll never atone for the sin of slaughtering our clan. I'll make you live on for the Uchiha and spend the rest of your life repenting!” “Nine-Tails, you're far too powerful. Follow me, and I'll set you completely free!” “Madara Uchiha, my ignorant predecessor! Think you can handle a Buddha statue clad in Susanoo?” “Sorry, Minato, but we Uchiha aren't interested in the duties of Hokage! I'll bring you and Kushina back to life to work for me!” That day, a giant Buddha clad in Susanoo rose from the earth! The Konoha High Command experienced the terror of being ruled by the Uchiha! And so the revenge began!