Yoshiharu Hisomu

Yoshiharu Hisomu (Japanese: 日染芳春, Romanized: Hisomu Yoshiharu) is a main character and one of the group of seven kiznaivers in the titular anime, manga, and novel series. His identification when he experiences pain is D-7. His modern-day sin is The Immoral (Japanese: インモラル, Romanized: Inmoraru).

Character Outline
A very handsome young man full of piercings who decorates himself with bandages. His face can be described as "beautiful" by anyone.

While initially introduced as a very mysterious and elusive character, his secret is soon revealed to be that he is a masochist, or someone who derives pleasure from pain.

Appearance
Hisomu is a naturally handsome, yet unkempt, teenager. He has mid-length, choppy purple taupe hair with grey highlights. His eyes are of a golden olive color, and he has multiple piercings on both ears, and a single labret piercing beneath his lower lip. He is perpetually seen with bandages covering his neck and his wrists. His clothes always look quite worn down and tattered, and are invariably paired with flip flops. He appears to stand around 180 cm (5 feet, 10 inches) tall.

Several characters point out that Hisomu is a "natural hot guy" (in constrast with Tsuguhito Yuta, who had to work hard to achieve and maintain his current appearance). Despite his ratty look and lack of concern for personal care, he is often checked out when he is walking in the street, or on the rare occasions that he comes to class.

Personality
Hisomu is portrayed as an eccentric masochist throughout the entire series. As a masochist, he experiences arousal when experiencing, or even thinking about pain, and typically expresses this arousal quite vocally and without shame. This causes much chagrin among the kiznaivers, especially Yuta who is deeply peeved and put off by the unsuitable behavior. On top of that it is very ironic, since Hisomu is wired to enjoy an experiment that most people would find difficult to endure.

There is subtle implication that he is suicidal, though like the rest of his traits, he likely does not view it as a problem to concern himself with.

When he is around Nico he will occasionally act childish, as their respective outlandish personalities seem to amplify each other's. He states that he cannot swim and that he doesn't wish to drown, which contrasts his usual all-inclusive attitude towards pain and suggests that drowning is one of the few forms of pain he doesn't wish to endure. It is unclear whether he has a trauma related to this or anything else, because he seems to have pushed everything except pain out of his mind.

Aside from this, not much is known about him in general, and he is considered an enigma by everyone, even the Kizna Committee members who watch his every move. Although he seems benign and spends most of his time smiling innocently, he is capable at all times of being blunt or ruthless with his words, which unnerves the other kiznaivers of his group.

Abilities
High Pain Endurance: It seems that Hisomu is able to withstand and enjoy physical pain, comparable to Katsuhira's high pain tolerance, with the contrast that the latter is not able to feel physical pain at all and that Hisomu feels pain every bit. In fact, in episode 9, it is shown that Hisomu was the only member of the group (save for Katsuhira) who was able to talk after they were able to hear each other's thoughts.

Intelligence: Similarly to Tenga, Hisomu is able to deduce answers from situations and come to valid conclusions easily. He is also able to understand new developments quickly, though he doesn't always like them.

Katsuhira Agata
Hisomu took a liking to Katsuhira the moment their eyes met in episode 3. He, along with Nico, are shown to support Katsuhira when times get tough within the Kiznaiver group. The both of them are shown to be on friendly terms with each other throughout the whole series.

Nico Niiyama
These two are on friendly terms. Even though in episode 3 Nico calls Hisomu a "scallywag," she appears to still want to befriend him. Nico and Hisomu are the first of the group to establish with Katsuhira that they still want to be friends even after the conclusion of the kiznaiver missions in the summer. At the end of the series, Hisomu notes that Nico is actually pretty mature.

Noriko Sonozaki
Different from the rest of the kiznaivers, Hisomu doesn't necessarily dislike Noriko. In fact, e seems to view her somewhat positively, as she is the one responsible for choosing him for the experiment. He can be blunt with her but is generally polite, just like he is with everyone else.

Quotes

 * "Could you die for me?" (to Katsuhira, episode 3)
 * "If you don't know what state your wounds are in, of where you're hurting... If you don't know that for yourself, there's no point in trying to share it with others, is there?" (Episode 12)

Trivia

 * Hisomu cannot swim.
 * He is the only kiznaiver to not fall in love with someone.
 * He seems to enjoy sweet things, briefly mentioning that he prefers Lumonde Bourbon over Baum Rolls in episode 4. He also asks for caramel ribbon ice cream when he, Tenga, and Yuta try to order from an ice cream counter.