Kiyotaka Ayanokoji enrols in Tokyo Metropolitan Advanced Nurturing High School, which is said to have a college entrance and employment rate of 100%. However, the 1st year D class, to which he belongs, is full of problematic children who could not be thought of as going to this school. In addition, this school gives students 100,000 Yen a month worth of points equivalent to cash, and tolerates students for chatting and sleeping in classes, an...

Each class from A to D is divided according to the ability of the students, and Class D is a drop-out class where students called "defective products'' gather. Because of their self-indulgent lives for one month after enrolment, the school has thoroughly lowered their evaluation and canceled all the points worth 100,000 yen that the students of Class D should get every month. Class D is forced to live in extreme poverty, and is told the stric...

Despite the fact that many of its students have poor grades, Class D finishes the midterm exam with a high score, contrary to the expectations of the school. Behind the test results are Horikita's desperate efforts and Ayanokoji's dark leap. However, Sudo, who is most anxious about his performance, gets a failing grade, falling short of just one point. The school decides that "Ken Sudo, you're expelled." What is Ayanokoji's last move to overt...

Class D finishes the midterm exam and gets a few points. The class members are happy to get out of extreme poverty, but new problems arise. It has spread that Sudo has assaulted members of Class C. He insists on self-defense, but the hearing will be held in the presence of the student council, and depending on the result, Class D will be deprived of points. Ayanokoji and the others are struggling to find evidence of self-defense. Ayanokoji ha...

Airi Sakura, a Class D student is thought to be a witness to the incident. Only Sakura can support Sudo's self-defense, but she somehow refuses to testify in the hearing. Even Kushida, who has no trouble in building friendly relationships with others, cannot open Sakura's closed heart. In the end, Ayanokoji and his friends arrive on the day of the hearing without being able to get Sakura's cooperation. Manabu Horikita, the student council pre...

With Sakura giving her best to testify, the hearing between Class C and D is brought in five minutes and will be redone at a later date. However, since Sakura's testimony is currently the only trump card for Class D, another clue is needed to further favor the hearing from here. Ayanokoji and Horikita investigate the crime scene once again. Folded, the shadow of a suspicious person is flickering around Sakura. A man who is an enthusiastic fan...

After the turbulent semester, the school is on summer vacation. Horikita, who says she doesn't need any of her friends, spends her days reading and studying without seeing anyone during the summer vacation. One day, she receives a phone call from Ayanokoji asking, "Let's go to the pool with the guys and girls from Class D." She usually refuses, but Horikita takes her invitation due to "some circumstances". Meanwhile, at the same time, Class D...

A vacation on the southern island is held as a school event for the first grade summer vacation. A super-luxury liner is also used to travel to the island, and one can enjoy the food of the restaurant and various leisure facilities free of charge on board. In the first semester, Class D students, who have been forced to live in extreme poverty with the strict rule of dropping out of school immediately with a red mark, relax and enjoy their va...

A trip to the southern island that seems to be a vacation is actually a special exam set by the school. Students will live on an uninhabited island for a week under the set rules. The main rules are "300 points are given to each class and you can purchase goods with those points", "You can get points by occupying a specific spot on the island", "Guess a leader in each class, and If you can, you will be given points." Depending on the results ...

The first day of the special exam has ended. Finally, Class D students are united and ready to cooperate and continue living on an uninhabited island. Meanwhile, Ayanokoji and Horikita begin to investigate how other classes are taking the exam. Ichinose and Class B enjoy life on an uninhabited island while making good use of their high unity and effectively saving points. Katsuragi and Class A set the cave as a base camp and never show the in...

Horikita holds the Class D leader key card. Her physical condition is getting worse. Ayanokoji notices it and points out, but Horikita hides her illness and survives because a penalty of -30 points will be imposed on the class if she retires. Around that time, a girl's underwear is stolen within Class D, and the boys and girls confront each other. The class will fall apart again. Furthermore, on the sixth day of the test, someone steals the l...

The criminal who steals Horikita's key card is Mio Ibuki. Horikita, who fights her to get her key card back, gets sick and finally collapses. Horikita refuses to retire in order to be recognized by his brother and to be promoted to Class A. However, Ayanokoji, who sees her as physically unable to carry on, forces her to retire. Conceding goals from being known to the leader, conceding two retirees, and wasting points due to the inability of t...