Miyabi Nagumo

Appearance
Nagumo is a tall, fair-skinned teenager with light blond hair and light blue eyes. Kei Karuizawa says that he doesn’t lack in the looks department but to her he is not someone who can rival the likes of Kiyotaka Ayanokōji.

Personality
Nagumo is a leader who likes to rule through an iron-fist, and is kind of a man who would expel anyone who tries to oppose him. Manabu Horikita suspects him for expelling 7 out of 12 students from the second year that had Nagumo involved in one way or another. He considers Manabu as his rival and keeps on challenging him, also trying to prove that he is better than Manabu. Despite Manabu already graduating, he now targets his little sister and takes joy in the fact that she is somewhat now directly under his control after she joined the student council.

It is later revealed by Ikuto Kiriyama that Nagumo promised the second year students reforms where ones who surpasses the boundaries between classes and are capable of making allies from different classes will be pulled up to A-Class. He believes in the ideology of winning the war at the expense of a battle as he lost to Manabu but was also able to drive Akane Tachibana to the point of expulsion.

He is shown to be quite persuasive as he got Honami Ichinose to give up her secret to him without much interaction between them beforehand. Although, this is also due to her gullible and credulous nature. He is also extremely narcissistic, but not to the point of Rokusuke Kōenji. He also likes to make those around him into his "toys", showing his deprave mindset. He is also not afraid to hurt his "toys" or sacrifice them for himself and his benefits such as when he gave Ichinose's secret to Arisu Sakayanagi. He can be livid when things doesn’t go his way such as when Kiyotaka Ayanokōji intervened during his plan to force Honami to become his girlfriend, only to have her saved by Kiyotaka instead.

He is also seen to be attracted to hot girls such as Honami Ichinose and Suzune Horikita and tries to charm them whenever he has the chance. He purposely refers to them by their first name after brief interactions and will take whatever chances to get close to them. For instance, he attempted to force Honami to rely only on him by entering a relationship with him as well as prolonging a hand shake with Suzune and looking at her tantalisingly. He has a reputation and aura of being a womaniser amongst the student body but despite that, some still views him in a good light.

Nagumo also has a tendency to be overconfident at times as shown in the Uninhabited Island Exam where he approached Kiyotaka Ayanokouji without any of his backup Free Groups in I2. Despite this, he is also shown to be calm and calculative as shown in the Mixed Training Camp where he conducted his plan without displaying arrogance nor confidence unlike his latter confrontation with Kiyotaka.

Background
Nagumo was originally a Class B student when he first entered the school.

Plot
In Volume 8, Nagumo made a bet with Manabu Horikita. He eventually lost their bet but successfully drove Akane Tachibana to expulsion (which was later negated) with the assistance of Momoko Ikari.

In Volume 10, Nagumo tried to make a deal with Honami Ichinose to provide her with 4,043,019 private points. In exchange, Ichinose would have to date Nagumo. It was originally done to make sure Ichinose had enough points (20,000,000) so that she would not have to sacrifice a person to be expelled in The Class Poll special exam. However, this was thwarted by Kiyotaka Ayanokoji who came up with a substitute dealer in place of Nagumo.

In Volume 1 of Second Year Arc, as said by Takuya Yagami, Nagumo was present in the creation of the bounty made by Acting Director Tsukishiro on providing 20,000,000 private points to the 1st year student who would be able to expel Kiyotaka Ayanokoji before the second semester.

In Volume 2 of Seocnd Year Arc, Nagumo tried to make Fūka Kiryūin his ally but the latter rejected it.

In Volume 3 of Second Year Arc, Nagumo took part in the Uninhabited Island Exam by employing the 'Free Group' strategy. He did this by commanding lower ranked 3rd year groups to monopolize the amount of points he and the other large groups of that year would get.

In Volume 4 of Second Year Arc, Nagumo's large group consisting of him and students from his class including Nazuna Asahina placed an overall ranking of 2nd place in the Uninhabited Island Exam with a total of 325 points, 2 points behind 1st place Rokusuke Kōenji's small group and 64 points above 3rd place Arisu Sakayanagi's large group. The main reason for him not getting 1st place was Kiyotaka Ayanokoji who injured him in I2 which cost Nagumo to lose time. Afterwards, Nagumo ordered the 3rd year students to follow and keep tabs on Kiyotaka.

Abilities
Nagumo was able to detect the lack of a "chosen" leader in Kiyotaka Ayanokōji's group during the Mixed Training Camp and he also has an eye for the very "beautiful". At school, he was able to gain control of all the classes in his year, and get onto the Student Council which was picky on who may enter. He also got Honami Ichinose to confess to him her past to him, although that was due to the latter having a gullible and credulous personality. He was manipulative enough to exploit this Achilles heel of hers and could have succeeded in his endeavour to make her into his girlfriend if it were not for the intervention of Kiyotaka.

Another one of Nagumo's traits is his strong hold on the 3rd Year Classes which prevents them from rebelling against him. This allows Nagumo to have more resources, be it private points or students from his year, during exams and anything else he needs to accomplish.

Name Etymology

 * The name Miyabi consists of kanjis that mean "elegant, graceful" (雅).
 * Miyabi's surname Nagumo consists of kanjis that mean "south" (南) (na) and "cloud" (雲) (kumo/gumo).

Trivia

 * For the 2nd Year arc, when asked about his aspirations for the next year, he answered  'That's obvious, isn't it? To stir and enliven the school. To open the door to an order of meritocracy that has never been seen.'