After Passing Through the Book, He Was Targeted by the Villain Brother

After traveling through the book, I decided to save my villain brother who would turn evil in the future. Delivering meals, supporting him, driving away bullies - I fully paid off my early emotional investment. I thought he was grateful to me, relied on me, and regarded me as his only sister. Until that day when he pressed me against the wall, his voice was so hoarse that he said: "Sister, you have raised me for three years, is it time to collect interest?"