- Tatsuya is extremely intelligent and analytical.
- Tatsuya is the oldest son of Shiba Tatsurou and Shiba Miya.
- Tatsuya soon became able to walk and the combat training began.
- Then, Maya and Miya performed the Artificial Magician Experiment on Tatsuya.
Shiba Tatsuya (司波 ) is the main protagonist of The Irregular in Magic High School. He enrolled at the National Magic University Affiliated First High School in April 2095 with his younger sister, Miyuki (深雪). He was accepted as one of the students to be placed in the Course 2 curriculum, marking the start of the series events. In his second year, he transferred into the newly-created Magic Engineering Course. Tatsuya is a stalwart self-assured young man in the prime of his teenage years, who lives alone with his younger sister in Tokyo, under the directive of the Yotsuba Clan. Besides being their home's caretaker, Tatsuya's raison d'être is to be Miyuki's, his sister's, guardian. In that sense, one would regard it as rather appropriate, even convenient, that the man designated as a sort of a bodyguard of the future head of one of the world's most influential magical organizations would have such a stern countenance and hard-bitten demeanor. Furthermore, aside from his deep-set eyes and piercing gaze, his looks are often considered rather plain.
Tatsuya is extremely intelligent and analytical.
Other characters generally view him as austere and competent-looking. His usual unyielding stoic countenance hardly ever betrays bewilderment or enthusiasm, but whenever it does, it's often at the minimum level. In the anime, he has dark black hair that reaches his clear blue eyes (it is inferred in the light novel that the color of his eyes is actually dark blue, similar to his sister's) in several unevenly-cut bangs. Except for the color of his eyes, Tatsuya's looks are altogether divergent from his sister's, a far cry from her magnificent beauty, as acknowledged by numerous people throughout the series. Tatsuya is extremely intelligent and analytical. His emotions are merely skewed in a certain direction, with one particular aspect becoming especially sensitive. Thanks to his distinctive analytical power, he is able to promptly categorize people into hostile and non-hostile. This is certainly convenient for military and political reasons, which encompass most of his activities. As a result of extremely high-end custom magical procedure that he was unwillingly subjected to at a tender age, Tatsuya does not possess the ability to feel any strong emotions. These include fear, despair, envy, hatred, disgust, gluttony, lust, sloth, and love, with the exception of where a single individual is concerned, his little sister. As a result of the magical procedures and the dire experiences he endured training for years a living weapon, one could state that the only remaining soft spot in his personality would be the love he nurtures for his younger sister.
Because of this, he tends to either spoil her too much, or be extremely overprotective and completely ruthless when there are even the slightest threats towards Miyuki's safety. His world revolves around Miyuki and he loves her dearly. Contrary to popular and widespread belief (mainly for the ones who have only watched the anime), Tatsuya is not apathetic to the point of deserving the emotionless label. He can be kind and caring towards his friends, and even tease them for his own amusement. Furthermore, while he doesn't possess strong sexual cravings, he can still be feel aroused and indulge in carnal delight. He is, in fact, perfectly aware of the enticing beauties surrounding him, including even his sister, throughout the series. Due to being treated as a counterfeit Magician, he seems to underestimate the merits of his own Magic abilities. He constantly looks down on himself, something that is likely an act, as this consensus is the underdeveloped product of third parties' short-sighted perspectives. Additionally, it is left unclear if Tatsuya actually believes such a biased judgment. Nonetheless, one could interpret it so, since Tatsuya has a habit of exhibiting overabundant amounts of modesty, whenever he is praised for his outstanding dexterity and achievements. Among his several idiosyncrasies, Tatsuya is often teased by his friends for displaying a total lack of common sense regarding social interactions. He displays numerous misunderstandings and uncanny responses towards regular teenage affairs, likely explained by his deprivation of any real social background unrelated to bureaucratic matters.
Tatsuya is the oldest son of Shiba Tatsurou and Shiba Miya.
Tatsuya is a man who, despite having experienced direct straits and having lost even his emotional freedom, is still confident in himself and his aptitude to change the world for the better. This is proven in a number of instances throughout the series, both by his belief in others and his own actions to make a better future for his sister. Tatsuya is the oldest son of Shiba Tatsurou and Shiba Miya. He is eleven months older than his younger and only sibling Miyuki. They are often mistaken as twins for being in the same school year, though sometimes they are not immediately recognized as siblings in general. From a young age, one of the only things for which Tatsuya showed anything resembling enthusiasm was in Magic Engineering and CAD development. He has an aptitude for them and has continually displayed his interest until the present day, as he is aided by the circumstances. Their house has a basement with the same floor layout as the floor above but remodeled as Tatsuya's lab. It is equipped with state-of-the-art equipment from Four Leaves Technology with plenty of space for him to develop and test any new types of Magic that he may require. The following section contains the latest spoiler.
It is due to this imbalance that he is unable to use any other form of magic.
You have been warned light novel-only readers. Proceed at your own risk. In the present time, aside from his two natural forms of magic, he is only able to use imitation and theoretical magic; something which can be ascribed to his other unique abilities and superior intellect. Despite this deficiency he has taken advantage of his physical prowess and his superpowers to become Miyuki's Guardian, which is considered to be a job of the highest importance in the Yotsuba Family. His combat prowess has also become respected enough that he is now a primary combatant of the Yotsuba Family. Tatsuya's Magic Calculation Area is dominated by his powerful innate abilities, such as Decomposition, Regrowth, and Elemental Sight. It is due to this imbalance that he is unable to use any other form of magic. So, to enable him to be able to use other magic spells, especially the Systematic-Type Magic, his mother, Shiba Miya, and her younger-twin sister, Yotsuba Maya, performed the Artificial Magician Experiment on the 6-year-old Tatsuya. Miya used her unique and forbidden Outer-Systematic Magic Mental Design Interference, forcibly altering the area in the consciousness that is responsible for strong emotions (called the Limbic System) and installed a Magic Calculation Model in an attempt to create an Artificial Magic Calculation Area. However, the strain of the operation in Tatsuya losing his ability to feel any type of strong emotions except for those regarding his sister. An additional side effect of this procedure was for Tatsuya to develop a perfect memory, allowing him to recall all of his memories with complete accuracy ever since the day of the experiment.
Tatsuya soon became able to walk and the combat training began.
It was later revealed by Maya that the operation was, in fact, to modify Tatsuya so he would not lose control of his emotions and become a berserker, destroying the world with his magic. In order to ensure that Tatsuya had something that he was attached to, Miyuki in this case, Miya removed all his emotions, but for some reason, that was beyond Miya's and Maya's understanding, he kept his love for Miyuki. It is revealed that Tatsuya's powers Regrowth and Decomposition were influenced by the will/prayers of the Yotsuba (particularly Maya and Miya) for a superman-like savior when he was just a fetus. The Yotsuba originally celebrated his birth, but due to the destructive potential of his magic, Kuroba Juuzou proposed the idea of killing the new-born baby, Tatsuya, but he was protected by Yotsuba Eisaku. When Tatsuya was a baby, he was raised to be a warrior. As early as when he was able to stand up, he was subjected to training in the optimization of his body. Tatsuya soon became able to walk and the combat training began. No matter how hard he cried and screamed, his will was ignored. As the family always resorted to locking him up, Tatsuya soon gave up on his rebellious attitude.
Then, Maya and Miya performed the Artificial Magician Experiment on Tatsuya.
Starting from killing a wild animal, then a military grade dog, then military strengthened animal, and finally a living soldier. Tatsuya first killed a man when he was six, immediately after the artificial magician experiments. He sank in a skilled 30-year-old combat magician in a pool of his own blood from the very start in combat, neither out of an accident nor a surprise attack. After Yotsuba Eisaku passed away, Maya took over the position of Family Head. Then, Maya and Miya performed the Artificial Magician Experiment on Tatsuya. Later Tatsuya was assigned as Miyuki's Guardian. Tatsuya is in fact half of the enigmatic Mr. Taurus Silver - the far famed Mr Silver (ミスター・シルバー) is renowned as a genius engineer who advanced CAD software technology by ten years within one short year. Currently, "Taurus Silver" heads the Third Division of Four Leaves Technology. The name of Taurus Silver was used for several reasons. First, Tatsuya was not of age when he developed the Loop-Cast system that Silver is famous for; legally, it would be impossible for Tatsuya to patent any of his inventions and developments without being of age.
Second, Maya wished to keep information about Tatsuya, a mere Guardian under the Yotsuba, under wraps as much as possible; having his real name attached to inventions and state-of-the-art technology would have been inconvenient (as too much attention would be placed on him and by extension, Miyuki). It seems there is a plan discussed by which Tatsuya will finally be allowed to use 'Shiba Tatsuya' for his inventions after graduation from First High School. This is the alias that is assigned to Tatsuya in the military (to be specific, in the 101 Independent Magic-Equipped Battalion) as an unregistered Strategic-Class Magician. In Volume 17, Tatsuya's identity as a member of the Yotsuba and furthermore as the son of Maya was made public. As Head of the Family, she has permitted that Tatsuya work for FLT as Taurus Silver. Hayama, as Maya's confidante, knows about his other aliases as well. Some other members of the Yotsuba Family were mentioned to also know about Tatsuya being used not only as a tool but as a weapon. However, it has not been mentioned who these people are and whether the Yotsuba knows if he is (part of) Taurus Silver. Members of the Yotsuba such as Shibata Katsushige as well as Tsukuba Yuuka know that he is Taurus Silver, and that he helps largely to the income of the Yotsuba Family. Kudou Retsu - Knows that he is the son of Yotsuba Maya, though he first determined Tatsuya as Miya's son before the public declaration of Maya.
39;t know the extent of what he knows.
Retsu knows that he serves in the 101 Independent Magic-Equipped Battalion (military) as a Strategic Class Magician. He might know more about him than Tatsuya himself. Shiba Miyuki - knows he is Ooguro Ryuuya, Japanese Strategic-Class Magician, part of the 101 Independent Magic-Equipped Battalion (military), (part of) the mysterious inventor Taurus Silver, and a member of the Yotsuba Family. Sakurai Minami - When Tatsuya mentioned that he was a Strategic-class Magician to Minami, she did not seem surprised; so it can be assumed that she was informed about some of his secrets and identities before being assigned as Miyuki's guardian. Most of officers of the 101 Independent Magic-Equipped Battalion know him as Ooguro Ryuuya, a Japanese Strategic-Class Magician, a part of the 101 Independent Magic-Equipped Battalion (military), but some are aware of his other identities as well, like the mysterious inventor Taurus Silver, and a person from the Yotsuba Family. Though the information about his aliases is probably contained to prevent any possible leaks from the military's side. Mibu Yuuzou - Mibu Sayaka's father; heard things about Tatsuya from Major Kazama but we don't know the extent of what he knows. Raymond Clark affirmatively knows that he is an unregistered/classified Japanese Strategic-Class Magician with the ability to use Material Burst and that he is a part of the military. He may also know that he is a member of the Yotsuba.
She might've speculated that he knows and can use all 16 Cardinal Codes (was present at the time when Tatsuya discussed it with Leo). Special Officer in the military under Major Kazama and initially speculated that he was from an Extra family, the ancestors of whom were bearing the number four in their name after she tests his reaction with her bodyguard's name. Though, now she is aware of his identity as a Yotsuba. Saegusa Kouichi is suspected that he is a member of the 101 Independent Magic-Equipped Battalion and that the squad has links to the Yotsuba. Now he is aware of his identity as a Yotsuba. 16 Cardinal Codes (been there at the time when Tatsuya discussed it with Leo). Special Officer in the military under Major Kazama, and that he is in the 101 Independent Magic-Equipped Battalion. 16 Cardinal Codes (was present at the time when Tatsuya discussed it with Leo). Special Officer in the military under Major Kazama.