Library

Will the little sister who is a freshman in high school and the big brother who is a senior in high school have a happy ending? This is equivalent to x Li Ning likes him, very much, and has liked him for almost two years, but he seems... To have never noticed her. He Yi devoted himself to studying. Ever since he learned that bloody lesson, he had intentionally or unintentionally reduced his contact with the opposite sex. But when he met her, he didn't keep his promise and was moved...