After transmigrating into the Naruto world, the System battles the Hokage world's will for control over its rules and is forced to self-destruct. All that remains is the System's core, which lets its inheritor, Uchiha Yuan, manifest anything.
He becomes the Uchiha's exclusive master of persuasive talk. As long as he has enough chakra, he can manifest anything, even the Scroll of Seals at a moment's notice.
He can also get all sorts of items and technology blueprints from other worlds.
Faithful to the original power system, with a sensible story.
