Takes place a year before the main events of Classroom of the Elite started in the eyes of Horikita Suzune. Having lived most of her life in solitude, she refuses to make any social interaction with the people around her if not necessary. However, with slight alterations in her past, Suzune instead finds a new reason to do good which also affects the people around her.

After constantly meeting up in the library to talk about their interests in books, Shiina Hiyori and Ayanokouji Kiyotaka has developed a strong relationship with each other despite coming from different classes. One day, a new bookstore opens up in Keyaki Mall. The two decided to go on a bookhunting date and explore the brand new store. However, they lose sight of each other.

Honami gets a text to meet up in a private area one-on-one. Usually, this is normal for the person she's meeting with. However, she feels a slight oddity in the air and goes to the meeting spot anxiously. What awaits her was a whole new world of pleasure.