My Sister Brought Back a Child Whose Biological Father Is Unknown.

My younger sister who was in college suddenly gave birth to a baby and took her home. Of course he said: "Anyway, the child has my last name, he is our family's descendant, and he will be the incense of our family in the future." Then she turned around and left, leaving the child with me and my parents. I was miserable and asked my sister to find the biological father of the child. But my sister said, "How do I know who the child's biological father is? I've played with so many boys, and I don't even remember him for a long time." I angrily said, "Then pull out all your men and do paternity tests one by one." She couldn't stand my hard work, so she beat me to death with a stool. "If you ruin my good deeds, I will make you pay with your life." When I opened my eyes again, my sister just came back with the child in her arms and left it for us to raise...