Ore ga Suki nano wa Imouto dakedo Imouto ja nai: Nagami Suzuka

Yuu's sister is an extreme beauty and has perfected in everything she does. Unlike her brother, Suzuka is very popular in school. She always tries to become a reliable person, even to Yuu. Nobody knows that she is crazy. about her brother. When she suddenly desires to write a novel named "The story of a little sister who loves her big brother so much it causes trouble," she asked her brother to become a writer using a false name after she wins an award