Cut all ties with the journey of atonement!!!!!
After learning the whole truth, Sasuke faced everyone’s accusations and pleas for him to come back. His killing intent surged, and his hatred would not fade. He felt not the slightest attachment to this utterly rotten world. In the depths of his despair, he helped Uchiha Madara cast Infinite Tsukuyomi, killed Black Zetsu, broke the seal, and forcibly awakened the Mother of Chakra, Otsutsuki Kaguya. Ready to die alongside her, he fought her, absorbed most of her chakra, and obtained a trove of information about the Otsutsuki before sealing her away again. Then he joined forces with Uchiha Madara to deal with the Otsutsuki, only for Isshiki to unleash a space-time storm and send him back to the past.
Sasuke had assumed that getting another life would be no more than a dream, like the one in Infinite Tsukuyomi. Even if he now had the power to save his clan and tear Konoha apart, it would still be nothing but a parallel world, as fleeting as a reflection in a mirror, and utterly meaningless to him. But fate is a strange thing. You never know what it has in store for you.
Cold and rational, ruthless, powerful, and skilled at manipulating people: every one of those traits would normally set off alarm bells for Sasuke. But no matter what, meeting Mr. Mori, whom the people of his world called a human-shaped AI, was something Sasuke felt fortunate to have done...
Content warning: This story is unfriendly toward Konoha. If that bothers you, don't read.
To be honest, overall it was alright, but Sasuke's character wasn't quite there. Sasuke couldn't possibly trust Mori Ougai unconditionally in this situation. Mori Ougai is quite similar to Orochimaru in some ways; both are ruthless in achieving their goals. However, Orochimaru's talent lies in science and biology, while Mori Ougai's lies in manipulating people and politics.
I really like it. This is a complete satisfaction for Mori fans! Finally, a relatively normal Mori-san story! Sasuke is also great; he's a rare normal person in Naruto. Whether they're paired up as a couple or just a simple family story, it's all wonderful. [Learned something new!] I wonder if the author has considered bringing Sasuke or the Uchiha clan back to Yokohama.