A brief summary of the story: Little brother thinks poorly of his sister because sour grapes. Older sister says she wants to practice giving blowjobs to her younger brother because her boyfriend said she was bad at it. She blows him. Later they're left alone in the house and she cooks all his favorite foods for him. She then tells him that her boyfriend broke up with her. He says she's popular so all the boys will get excited at the news, and she asks him if he feels the same way. He acts tsun and says he wants to find the cutest girl in the world to date, someone not like her. She then offers to have sex with him as practice until then. They have wild sex and the girlfriend admits that she never actually did any sexual stuff with the boyfriend, and she was just using it as an excuse to blow her brother. He says he loves her, she says that she's always loved him too and they live happily ever after. The end.