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Shiba Miyuki

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I owe my life to him, and all I have and all I am belong to him alone.

— Miyuki, Volume 5: Summer Break

Shiba Miyuki

Mahouka Koukou no Rettousei7643

Shiba Miyuki

Character Name
Full Name Shiba Miyuki
Kanji 司波 深雪
Furigana しば みゆき
Personal Info
  • Snow Queen
  • Queen
Age 16
Gender Female
  • Student
  • Student Council Member:
    Secretary (Volume 1-5)
    Vice-President (Volume 6-Present)
  • Potential Successor (Yotsuba)
School First High School
Ability Name
Weapons & Equipments
Voiced By Saori Hayami
Novel Volume 1, Chapter 1
Manga Volume 1, Chapter 1
Anime Episode 1, Enrollment Chapter I
Spin-off Manga Volume 1, Chapter 1

Shiba Miyuki (司波 深雪) is one of the main characters of the "The Irregular in Magic High School" light novel and animated series. Prior to the first chapter of the light novels, she topped the entrance exam for First High School and is introduced as the freshman representative.

The spin-off manga, "Mahouka Koukou no Yuutousei," has Miyuki as the main protagonist, depicting her point-of-view in a timeline parallel to when the original manga started.

Appearance and PersonalityEdit

Miyuki is described as a lovely, beautiful girl who captivates whoever sets their eyes on her. Her arms and legs

Miyuki full body

are slim, slender without looking too unhealthy. It was mentioned by Mayumi that the number of perfectly symmetrical features in Miyuki

12 year old Miyuki

was overwhelming to the point that "her confidence in herself wavered."

Because of her openness, modesty, well-brought up manners and behavior, coupled with her lovely, beautiful appearance, Miyuki is popular not just among male freshmen students of their school, but also among females and upperclassmen. Her speech and movement patterns are completely different from Tatsuya's, something their deceased mother should be given credit for, a real Yamato Nadeshiko[1]</nowiki>

Despite being a Course 1 student and the best among her peers (possibly the best in the whole school as Mayumi and Mari admit no one in their school can match with her magic power while watching Miyuki vs Lina in Volume 9 Chapter 3 among the magicians of her generation), Miyuki doesn't discriminate against Course 2 students and befriends both Erika and Mizuki in a short amount of time.

Miyuki has a slight mischievous side to her. She teases Mikihiko and Mizuki about the way they talk with each other in the middle of the war zone in the Yokohama Disturbance arc. She once acted over-affectionately with her brother in order to mess with Mizuki, Erika and Leo in Volume 2 Chapter 6 (It apparently had a great effect on Mizuki as she became completely lost in her dream world). However, she has been constantly revealed to harbor forbidden feelings for Tatsuya, even lamenting once on the fact that she was born as his little sister, clearly indicating that she wishes to have a romantic relationship with him.

The thought of marrying another boy repulses and disgusts Miyuki. It is not a biological issue, so something like dancing was still acceptable. However, in Miyuki’s heart, the only one who was allowed to touch her is Tatsuya. The only one who could do as he wished with her was Tatsuya himself alone. Her love for her brother came to such extent that she would be willing to offer her heart and body to Tatsuya willingly. For her, "no matter if it was her body or heart, everything that she was belonged to Onii-sama."

As a gifted magician and a candidate for the future head of the Yotsuba clan, she is used to and is even displeased with flattery and compliments since many of these are coated with a mix of jealousy, envy, and malicious intent. However, she is always filled with bliss when Tatsuya compliments her. Miyuki is extremely sensitive when it comes to her brother's whereabouts. She strongly dislikes the fact that people do not see her brother's real worth and states it occasionally, but she is often brushed off as being biased like in the earlier parts of Volume 1.

In place of her brother, it is Miyuki who gets angry whenever people look down on Tatsuya. She also gets irked and jealous several times when girls crowd around Tatsuya, mostly due to her own feelings for him. While she can control her actions at times like this, she unintentionally reduces the temperature around her due to her inability to control her magic when she's agitated. It isn't limited to her jealousy but instead whenever she has strong emotions (in Volume 8, Chapter 6, when she tries to calm down in order to not "go causing a frost on the beach in Okinawa in the middle of summer".)


Miyuki is the daughter of Shiba Tatsurou and the late Shiba Miya, and is eleven months younger than her only brother Tatsuya (her birthday falls on March 25, a month before Tatsuya's birthday). They are mostly mistaken as twins for being in the same year.
MHKR 19-14

Shiba sibling's house

Prior to the timeline at the beginning of the series, their father remarried six months after their mother's death, and the two of them are living alone in a house, which is described as a place that vastly exceeds the average size. The siblings lived alone till up to Volume 11 of the light novels (in Volume 12, Minami joins them as Miyuki's other guardian).


Main Articles: Yotsuba | Reminiscence Chapter

Miyuki is a descendant of the Yotsuba Family and was born with superior magical abilities. Due to this, she grew up a pampered child and was raised in a manner befitting one of the candidates to succeed the family's Head position sometime in the future. Unlike her brother, who was technically demoted from an heir to being a mere servant, Miyuki enjoyed the privileges a Yotsuba deserves. She is now the number one potential successor. 
In Volume 8 of the light novel series, it is stated how unequally she and Tatsuya were treated by their family and relatives. The Reminiscence Chapter also showed how vastly different Miyuki's opinions and actions towards her brother were three years before the current timeline.

Defense Battle in Okinawa (2092)Edit

Main Article: Defense Battle in Okinawa

When the Great Asian Alliance attacked Okinawa in 2092, Miyuki — along with her mother Miya and her mother's guardian, Honami— took refuge in the army's shelter but due to some conflict with the Left-Bloods, they were caught in a dire situation. Under the effects of Cast Jamming, they couldn't defend themselves; however, when the Psion waves weakened, Miyuki activated Cocytus and froze the souls of the men.
As a result, they were shot by the men's other companions. Almost dying, Miyuki was saved by Tatsuya who used his innate ability Regrowth for the first time. From that point on, Miyuki changed her attitude towards her brother and was shocked when she learnt about Tatsuya's emotions.


Physical AbilitiesEdit

Miyuki also received martial arts training from Kokonoe Yakumo, so it is stated that her frail frame belied her superb physical status.

Sensory Abilities Edit

Miyuki has the ability to sense "information" through touch and smell. Not much is known about the extent of her sensory abilities but she is able to use her senses to "smell" that Tatsuya had been in a fight with over 10 people and was injured in that fight.

"Just as Tatsuya could use sight to capture "information", so too could Miyuki detect "information" through touch. However, Miyuki was more capable than that, as she could also use smell to receive knowledge that was practically instinct."

— Tatsuya on Miyuki's sensory abilities Volume 11: Visitor Arc Part III

Magical AbilitiesEdit

Miyuki excels in Speed and Freezing Magics, and boasts a very strong Interference ability. It's stated in volume 11 that her magic specialty lies in suppressing an area. It also said that her magic level wasn't just worthy of being powerful, but also being tactical. It was noted that she can wield Rank A magics at will. Currently, the limit of targets that she can snipe with magic at the same time is 16. She can also wield basic Fluid Control magic.
Tumblr n6vgilJIBO1qcsnnso1 500

Outer-Systematic MagicEdit

Main Article: Classifications of Magic

Outer-Systematic Magic (系統外魔法) is one of the three types of magic which doesn't belong to the 8 Types of the 4 Branching Classifications of Magic, along with Perception-Type Magic and Non-Systematic Magic.

In the Yotsuba family, each individual possessed a unique ability that could not be categorized, but no one deviated from the principle that magic is inherited. Miyuki's mother possed the unique Non-Systematic Magic that could interfere with another person's mental make-up, and thus as her daughter, she inherited a form of mental interference magic. Because of this, Miyuki is able to serve as Tatsuya's limiter.

Related Articles: Yokohama Disturbance Chapter
Cocytus is an Outer-Systematic Mental Interference Magic unique to Miyuki. Unlike her other Freezing Magics, this doesn't have a noticeable effect on the surface, such as frost or cold temperature. Rather than the targets physical bodies freezing, it was their consciousness that were frozen.
The bodies bound by their frozen minds could not even die. They could only collapse like a row of statues, forever captured in the postures before the frost came.

— A Description for Cocytus , Volume 7: Chapter 12

Not only because Mental Interference Magics are strictly forbidden, Miyuki is unable to use this magic at will unless her magic territory is released. In order to seal Tatsuya's power, she spend half of her own magic on her brother. Miyuki's magic sometimes went out of control as a side effect of suppressing her brother's magic.

Oscillation-Type MagicEdit

Related Articles: Classifications of Magic | Incident in April | Nine Schools Competition
Niflheim is a Wide-Area Deceleration-Attribute Oscillation-Type Magic and considered a Rank A Freezing Magic. This technique ignores heat and appearance, using magic to uniformly cool down all the objects within a set area. As a result, a large mass of cold air which contains a fog of liquid nitrogen, Diamond Dust[2], and dry ice particles is formed.
Related Articles: Nine Schools Competition
Inferno is a Medium-Scale Oscillation-Type Magic. A magic which reverses the heat enery within a set area. Areas of bitter cold and scorching heat occur in adjacent regions.
By dividing the target area into two sections and decreasing the kinetic and rotational energy of all objects within one section, this surplus energy could be released into the other section in the form of heat. This way, conservation of energy is still maintained while applying the principle of reverse entropy from thermodynamics[3].
It is mentioned that this magic sometimes serve as an exam for Rank A Magicians.
Freeze FlameEdit
Related Articles: Yokohama Disturbance Chapter
Freeze Flame is an Oscillation Speed-Type Wide Area Magic that could freeze fire. It is a conceptual magic that prevented anything from burning. This magic can suppress the temperature of targets within a certain threshold.
Although it is said that Magicians are still vulnerable to real firearms, those still rely on gunpowder, and burning gunpowder to create the force is necessary to propel the bullet. If the flammable object could be prevented from heating up, then ignition would become impossible. Thus, firearms that have been subjected to "Freeze Flame", regardless of whether they were guns or cannons would be silenced so long as they relied on gunpowder or explosives.


Nine-Schools Competition - Year 1, AD2095Edit

Ice Pillar BreakEdit

Miyuki participated in the Newcomer's Division and won first place after a magnificent match against Kitayama Shizuku

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Miyuki in Ice Pillar Break

Mirage BatEdit

She was initially registered for the Newcomers' Mirage Bat competition. But due to an accident befalling Mari, she was moved to the Official Division. In the Official Division, she was able to use the Flying-Type Specialized CAD that her brother made recently as Taurus Silver and claimed 1st place in  the match by a large margin.

  • Miyuki winning Mirage Bat
  • Miyuki practicing for Mirage Bat
  • Miyuki utilizing flying type magic during Mirage BatGo to flying type magic


  1. is a Japanese term meaning the "personification of an idealized Japanese woman", or "the epitome of pure, feminine beauty".</span> </li> <li id="cite_note-Niflheim-1">[[#cite_ref-Niflheim_1-0|↑]] <span class="reference-text">Ice Needles</span> </li> <li id="cite_note-Thermodynamics-2">[[#cite_ref-Thermodynamics_2-0|↑]] <span class="reference-text">[ Entropy] (Physics)</span> </li></ol>


  • Some of Miyuki's spells (such as Inferno, Niflheim and Cocytus) are named after a certain place or aspect of the underworld or afterlife.
  • Miyuki's beauty has been emphasized and acknowledged by most of the characters in the series, both male and female, with some being enthralled and overwhelmed by the sheer level of her beauty.
  • The kanji of "Miyuki" means "deep snow."
  • True to her namesake, most of the spells Miyuki has displayed so far in the series are related to ice and/or freezing.

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