Dai Xi witnessed her best friend, Nohara Rin, die and fell completely into darkness, but then she suddenly received a set of memories. In those memories, she was named Obito, took Madara's name, awakened the Mangekyo for the one she loved, unleashed the Nine-Tails, fought the Fourth Hokage, controlled the Mizukage, deceived Nagato, united the Akatsuki, gathered the Tailed Beasts, started the Fourth War, became the Ten-Tails, awakened the Rinnegan, fought Sasuke and Naruto, and spent her entire life on the battlefield for Rin.
Now, she's going to take on everyone who wants to control her! She'll never be anyone's tool again!
She'll create a peaceful world where only the victors remain, and no one is divided from one another.
(It's my first time writing a novel, so the beginning isn't very good.)