Miu Iruma

Miu is described as an oddball, having an overly confident, loud personality and a frighteningly sharp tongue. She considers herself a beautiful genius, and every time she opens her mouth she spews a parade of reckless vulgar remarks and insults, strongly putting pressure on others and looking down on them. She also tends to give other characters insulting nicknames, and would routinely call them virgins. However, Miu's arrogant personality seems to be only a mask that can drop fairly easily. This often happens when her festival of coarse language and dirty jokes actually get replied to or ignored. Then, her personality quickly changes into a timid coward, who is terrified of other people being angry with her. Because of this, she has a charm similar to an innocent child.

As an inventor, Miu is skilled but also an eccentric who treats her failed projects with the idea that "I transferred the rights to the company, so it's got nothing to do with me". She has made all kinds of amazing creations, creating a wide and diverse set of inventions that range from high tech contact lenses, advanced security cameras, and even military-grade weapons. She also has a habit to make very bizarre, seemingly pointless inventions which are sometimes very sexual in nature, including a "Hookup Counter" which tells how many people you've had sexual intercourse with, or an "Auto-Puncher that Punches You for Telling Terrible Dirty Jokes" which uses a spring loaded boxing glove to punch anyone in a nearby vicinity that tells a terrible dirty joke. Nevertheless, Miu has also used her remarkable talent to make very useful inventions as well, such as a set of weapons she deemed "Electrohammers" and "Electrobombs", both of which are man portable EMP devices used to disable or destroy various kinds of electronics. Her unmatched talent has deemed her worthy of the title of "Ultimate Inventor"

Miu comes off as very perverted and openly says bizarre, obscene things during her arrogant moods, meaning almost constantly. She often claims that she just says them to lighten up the mood, but they are very much disliked by the other students. Despite often trying to act dominant and appear sadistic, Miu is also masochistic and into BDSM, and acts very different during her weak-willed moments. Despite her usual arrogant behavior, she seems very uncomfortable if other people actually indulge in her lewd comments or actions. She claims to have various kinds of kinks and fetishes, but what she actually likes or doesn't like isn't known by anyone other than her. Despite her penchant for calling her peers virgins, openness about her kinks, and tendency to make obscene remarks, it is suggested that Miu actually is a virgin herself. It is also suggested that Miu wants love and not just sex.

Miu has a very cowardly and self-centered personality underneath her egotistical and arrogant mask. Despite her amazing inventive genius, she is rather dumb when it comes to other, simpler matters; one can describe her as "really smart, but also really, really dumb". She is generally not liked by those around her, possibly being the least respected engineer in her place of work. Despite her timid personality, she genuinely believes her bragging and ego, thinking she can change the world with her inventions and that she is truly important to humanity.

At a young age, Miu endured a severe injury that nearly killed her. This injury put her in a coma, where she was operated on numerous times until she was stabilized and later awakened. This experience has caused Miu to speculate if she was secretly augmented and enhanced during her time in a coma. She has been shown to act in a self-destructive manner at times, believing she cannot be harmed nor killed in the same ways as ordinary humans. It's also heavily implied by her own words that she had a tendency to use powerful hallucinogenic drugs in highly stressful situations, to make herself forget all about it.

Miu suffers from major trust issues, has a major fear of betrayal, and suffers from severe abandonment issues. though the reason and cause of these fears are something only she knows.

Miu is tall for a Japanese woman, with a height of 5'8 (173 cm). She has an hourglass figure and a fair complexion. She has waist-length strawberry blonde hair that flows in waves around her back, with two short locks of hair sticking up at the top of her head, sweeping to her right. Her bangs are long and wispy, swept somewhat to her left. She has shaky ice-blue eyes. Her head accessories consist of a pair of brown goggles with gold accents. Miu wears a modified, long-sleeved, dark pink seifuku uniform with a white sailor collar and sleeve cuffs, both striped with a single faded pale blue line, a faded pale blue bow tied at her collar. Her chest cover is noticeably missing, her cleavage exposed. Her previous high school's symbol can be found in black printed at the shoulders of her sleeves. She wears a short, dark pink pleated skirt the same color as her uniform, vertically striped, off-white, knee-high socks, and black heeled boots accented with gold buckles, studs, and buttons. Her accessories include a black choker, two rubber collars that resemble barbed wire, black fingerless gloves studded with silver, a pin of a cartoon mouse mascot on her collar, black straps connected with gold studs wrapping her left upper arm, and black straps studded with gold linked with gold rings around her torso and legs.