Kido is a real outcast in his class. But everything changes, and one by one, circumstances lead to the fact that he becomes the object of attention of Hino-senpai, a beautiful girl who attracts the attention of all the students... And every day the mutual attraction of these high school students to each other only increases...

A literary high school student with big breasts (who loves romance novels) and a serious Yankee boy (who loves this high school student) have a forbidden romance in the library after school. What secrets are hidden under the masks of these seemingly quiet and calm students?