harry goes back in time fanfiction

One hundred years have passed since the 4th Shinobi World War. Many shinobi have passed away, including his teacher, best friend, wife, daughter, and peers , and Sasuke, who has witnessed it all, finally comes to the end of his life. He has nothing left to regret, and his long-standing relationship with his family is now at an end. With the smile of his great-grandson, who looks just like his best friend, burned into his eyes, Sasuke bites the happiness of having lived and breathes his last breath - or so he thought. However, Sasuke woke up again. This was before he entered the academy. He was only six years old, a tiny child. My family has not yet perished. My parents are still alive. Sasuke caught a glimpse of his brother suffering and made a decision to change the past. Saving the past and destroying the future - is there hope beyond that? No one knows yet. Grammar sometimes sucks pls bear with it