Natsuki Seba

### Occupation

Student at the JCC (Weapon Production Department Leader & First Year Researcher)

### Affiliation

Okutabi Lab (Former)
 JCC

## First Appearance

### Manga Debut

Chapter 20

**Natsuki Seba** (勢羽せば夏生なつき, *Seba Natsuki*?) was an employee of the Okutabi Lab as well as its latest and most successful test subject, he's also a student at the JCC. Seba was once a major antagonist in the Lab Arc, but he later on became a supporting character. He is the older brother of Mafuyu Seba.

## Appearance

Seba is a fair-skinned young man with messy, black hair and black eyes with two moles on the right side of his face just below his eye.

## Personality

Seba is a very lackadaisical man with an attitude to match it. Whether he's on an important mission or even reporting to a superior, he displays a general nonchalant, borderline apathetic personality. He's also the kind of man to call a spade a spade, divulging how the person they abducted was not actually their proper target despite the risk of incurring Kashima's wrath. However, despite his carefree nature, Seba possess a good work ethic and is more than capable of some modicum of long-term planning as he wishes to save up enough money so he can retire and, by his own admission during his clash with Shin, he doesn't feel right stamping out early when the job isn't done. But aside from his lackadaisical personality, he cares very deeply about his younger brother, Mafuya, as he would always protect him from their harsh father's abusive treatment and made him any kind of gadget in order to ease their intense training. He was even willing to go to the JAA's orphanage which had a reputation for being highly dangerous for its charges just to protect him and became completely determined in locating and saving him after hearing his abduction by X's Organization.

## Skills & Abilities

**Prodigy Weapon Maker**: Natsu's greatest strength is his ability in creating highly intricate gadgets and weapons. Since his childhood, he had already begun showing his talents as he was the one to make his brother's Bladed Shoes and multiple gadgets to use for their training. His talent has only grown as he gotten older with his works being acknowledged by his peers at the JCC to be above theirs. But while he may be a great creator of weapons, he also has had a wave of failures and defective prototypes. However, his efforts yielded positive results which led to his most successful invention, the Invisibility Suit.

**Trained Combatant:** Natsuki showed himself be a skilled combatant as he was able to contend with Shin and Heisuke, having stabbed Shin multiple times and was able to blitz him once with his Invisibility Suit.

## Equipment

* **Invisibility Suit**: Seba's greatest creation. He wears a special, black-colored suit which enables him (or whatever it's covering) to become invisible. Although not overtly dangerous, when combined with Seba's intelligence and high-level skills in hand-to-hand combat, it is a deadly weapon.

## Etymology

* The name **Natsuki** means "summer" (夏) (**natsu**) and "life, living" (生) (**ki**).
* Natsuki's surname **Seba** means "momentum, energy, impetus, military strength, spring, bound/rebound, inertia, stimulus, impulse, instant, chance" (勢) (**se**) and "feather" (羽) (**ha**/**ba**).

## Trivia

* Natsuki ranked 6th place in the manga's 1st Character Popularity with 4,523.