Naruto: Hinata's Brother Awakens the Pure Eye at the Beginning

Travel through Naruto and become Hinata Hinata's twin brother - Hinata Shoto. The beginning is the hell difficulty: on his third birthday, he must block the cursed seal called "Caged Bird" for his sister in the clan ancestral hall. In order to prevent Hinata from being controlled by others for life and death, he must act step by step: Showing his fangs in front of his father, wandering between the Third Hokage and Danzo to the limit, using his talent to buy time, and using calculations to gain chips. He protected her, fought her way out of the family's cold discipline, and watched her become more confident and powerful day by day. I thought that as long as the shackles within the family were resolved, everything would be fine. However, he guarded against the Zong family, guarded against Danzo, and even guarded against the haze of war in the future. But the only thing she didn't guard against was the light in Hinata's eyes when she stood on tiptoes and looked at a certain blond fool. "... Too careless." (This book is also called "About the little thing that I guarded against for many years, but cabbage ran away with the pig in the end". Don't worry about it.)