It's so Difficult for Me as Fushiguro's Eldest Sister

I, Minami Fushiguro, have a brother, Megumi Fushiguro, and a half-sister, Ritsuki Fushiguro. As the name suggests, my life from childhood to adulthood was extremely difficult, especially for my lovely little brother, who had to worry about the teacher until his hair turned white as snow (?) But as the eldest sister, I wonder who dares to bully our children of the Fushiguro family! —— Childhood: Nan (angry): "What a shame! If you try to betray my brother again, I will expel you from my father's family!" Hui: "He plans to sell you too." …… Junior high school: Nan (very angry): "Gojo Satoru!! If you leave my brother alone in a pile of cursed spirits again, I will feed your dessert to the cursed spirits!!" Gojo: "The curse spirit doesn't eat desserts." …… High school: Nan (angry to the point of convulsing): "You are a bastard!!! If you dare to harass my brother again, I will stew your fingers into a pot of chicken feet soup and feed it to Gojo Satoru!" Knotweed: "Wait! Xiaonan, calm down!!!" ———— In short, this is a story about an irritable old sister who is worried about her younger brothers and sisters. Relaxed daily life, focusing on family and friendship, cp casually 2021/2/4 Purpose: The children of the Fushiguro family will be guarded by the eldest sister!