Each class at school is involved in a game that determines each individual's position in the caste system through picking up trump cards scattered throughout the campus.

Students who draw the Joker, refuse to participate in the game, or inform the teachers are immediately turned into Targets and bullied.

Azusa is forced to submit to Karino to avoid being assaulted by the class, but despite facing constant harassment and bullying, he is undeterred and fights back to regain his position.

As Azusa learns more about Karino's background, other students, overcome with envy from their social statuses, form relationships ranging from love to hate with each other throughout the caste game.

[8] In addition, Ogawa sold an unofficial dōjinshi featuring Tamotsu Yoshinaga and Kento Megumi for Comiket 89 on December 29, 2015 and also posted it on her Pixiv account.

[10] A drama CD adapting the first volume was announced on July 7, 2016, starring Yuma Uchida as Azusa and Yūki Ono as Karino, and was released on October 26, 2016.

[30] The first volume also included an original drama track titled "In the Middle of the Game" and peaked at #58 on the Oricon Weekly Album Rankings.

[43] Anime News Network gave the first volume a low score, citing discomfort with conflating bullying and cruelty with sexiness, while stating Atsumu and Kuze's segments were more palatable.