Naruto: Mangekyo from the Start, Just in Time for the Clan Massacre?

[Naruto] + [No System] + [One Heroine] + [Invincible Path] An ordinary office worker from the 21st century accidentally transmigrates to the world of Naruto and becomes Uchiha Jingxian. That very night, he witnesses Uchiha Itachi slaughtering the clan. Driven to despair, he awakens the Mangekyo... In a world of Naruto where godlike figures run rampant, Jingxian must grow stronger to survive. So he sets his sights on the Sealing Jutsu hidden in the Hokage's home, Hashirama Cells in Orochimaru's hands, and even Shisui's eyes in Danzo's possession. But is Jingxian satisfied with that? Of course not. He obtains the Nine-Tails sealed inside the deceased Fourth Hokage, then breaks into Konan's bedroom in the dead of night and takes control of the Akatsuki... When Jingxian's personal strength hits a bottleneck, he decides to head to Takamagahara to prepare for the Otsutsuki. But after obtaining Isshiki's corpse, an interesting idea occurs to him. Wouldn't it be better to use Otsutsuki he created himself to attack the Otsutsuki?