|Kinji Tohyama (GII)|
|Name in Japanese||遠山キンジ 「金次」|
|Romaji Translation||Tōyama Kinji|
|Debut (Anime)||Episode 01|
|Debut (Light Novel)||Volume 01|
|Debut (Manga)||Chapter 01|
|Appears in||Anime, Light Novels, Manga|
|Voice Actor (Japanese)||Junji Majima|
|Voice Actor (English)||Todd Haberkorn|
|Birthday||July 16, 1992|
|Height||170 cm (5'7")|
|Weight||63 kg (138 lbs)|
|Classification|| Butei (Inquesta)|
Student at East Ikebukuro High (Temporary)
|Skill Rank|| Rank E|
Rank S (in Hysteria Mode)
|Title (s)|| Dark|
Quadra (Quadra of Mimicry)
Hysteria Savant Syndrome
Beretta 92FS Inox (Illegally Modified "Kinji Model")
Magane Tohyama (Grandfather)
|“||The only work I hate... is that of a Butei.||”|
Kinji Tohyama (遠山 キンジ Tohyama Kinji?) is the male protagonist of the Hidan no Aria novel series and a Rank-E Inquesta student at Tokyo Butei High School. Formerly, he was an S-Rank of the Assault department, however the death of his brother caused Kinji to seek quitting the life of being a Butei. Despite this, he attracts the attention of the transfer student and Assault Ace, Aria H. Kanzaki, and becomes her partner to clear the name of her wrongfully imprisoned mother.
Kinji is a tall young man with wavy black hair and brown eyes. He has been described as handsome and gloomy. Throughout most of the series, he wears his school uniform.
On the outside, Kinji appears to be highly anti-social to most people and especially cold to women, even borderline misogynistic due to trauma with girls during middle school, where he was taken advantage of and being ganged up when trying to stand up for himself. To his classmates, he's often thought as a loser, shut-in, womanizer, and a waste of talent because of his indifferent attitude to the point of feeling isolated among the student body. He's even believed to be homosexual since he shows little to no interest in women. However, despite his fellows students attitude towards him, he does not see them as bad people.
Kinji acts rather secretive and isolated to other by choosing to endure the struggle of things such as Hysteria Savant Syndrome or the loss of his brother on is own rather than vent it to his friends. This includes his incessant need to hide his inner pain as well as act independently rather than trusting others and relying on his friends. Due to this he is rather touchy on those subjects and will more often than not lash out at someone who tries to pry too much. Also, when his brother, Kinichi, was reported killed in action after saving the lives of all the people on a cruise ship from the Butei Killer, he was ridiculed by media for doing so to the point that even Kinji was targeted. This instilled severe trauma in human cruelty in Kinji as well as severe hatred of the media. as well as questioning his purpose as a Butei. Eventually, this caused Kinji to come to the conclusion that it was worthless to help people and enter into a state of depression to demote and secretly walk away from Butei life altogether.
Later in Volume 12, as Kinji was trying live a normal life, he found it to be boring and unfilling. Also, his anti-social and odd behaviors would almost make it impossible to make friends at the normal school he was attending. At the same time he found the fights he got into and being in the underground world of the Yakuza exciting and lively.
Kinji personality under the influence of Hysteria Savant Syndrome takes a dramatic shift by becoming unnecessarily melodramatic when it comes to his statements and speaks with a smooth demeanor and indifference to women shifts into a seductive manner, causing him to go to great lengths to protect them both physically and mentally. This has caused women to become seduced and sometimes faint. However, when he is under the influence of Hysteria Berserk, all of his bottled up feelings including rage are released and set free.
Despite all this, Kinji is actually a kind and caring person with a strong sense of justice as a Tohyama, even though he hates it. He believes the powerful should not harass those without power and follow the rules of law even if his life is at risk for the sake of order. This includes taking opponent even more powerful than him like Jeanne, Kana, Patra, Sherlock, Watson, Hilda, and GIII. Kinji to the dismay of Aria, prefers to a non-violent approach when facing the enemy before using it. Also, as noted by Aria, Kinji will show world-class bravery in the face of great danger. In addition, Kinji will not hold a grudge against anyone for their past action because he believes it is a waist of life and he has learned to forget about it.
For for all attitude about hating people and being a misogynist, Kinji also deeply values his friends and family to the point of going to great lengths to protect them even if he has to enter Hysteria Mode. More importantly, he has a rather subtle charm that draws people towards him including giving off an aura similar to a great leader as observed by Reki and Tsuzuri. This has caused the entirety of the Assault department, including Akari Mamiya (who hates him), to secretly worship and respect him. Also, it has led to pass enemies to become allies like Riko, Jeanne, Watson, Kaname, GIII, and more. In addition, he believes that as man he should protect women even though he is not always successful at it. As a result of Kinji unique personality, quite a lot of girls have fallen for him and fight over him. This includes: Aria H. Kanzaki, Shirayuki Hotogi, Riko Mine, Reki, Jeanne d'Arc, Misaki Nakasorachi, L.L (Elle) Watson, Kaname Tohyama (very much to Kinji's disgust and dismay), Moe Mochizuki, Kikuyo Katagaka, Lisa, Katze Grasset, Sarah Hood, Kanae Kanzaki, Yamane, and Beretta Beretta.
Kinji was born as the youngest child of the Tohyama family before Kinzou and Kaname were created. As a child he learned his family arts and Hysteria Savant Syndrome from his older brother, Kinichi. He became very proficient at his family's craft, much to the admiration of his older brother. Also, he often made regular visits with his family to the Hotogi Shrines, where on one occasion he met and befriended Shirayuki. Often times they would play together and, despite knowing the punishment Kinji would receive, he brought her to the world outside of the Hotogi Shrine. However, during Kinji's youth, his parent died sometime and was raised by Kinichi.
During middle school, he and Shirayuki parted ways, so he took on the role of becoming a Butei like his older brother by entering in a school meant to train Butei's. It was during this time period where he met Kikuyo Katagaka, who was hiding and crying after being bullied, while cleaning. Kinji would comfort her and under the influence of HSS, would get the girls who bullied her to apologize. However, school life would be anything, but easy for him after this due to the girls in his class, including Kikuyo, investigating him and exploiting his HSS ability in order be their personal "Ally of Justice."  This would have a lasting effect on Kinji, as he would develop a complex against women and using his family's special talent, especially after being ganged upon after trying to stand up for himself each time. Despite, what Kikuyo did to Kinji, he did stand up for her when she was accused of stealing money from the classroom lock box and resulted in her not using his abilities against him for the remainder of her stay in middle school. Also, while in middle school, Kinji encountered an underclassmen, Hina Fuuma, where he fought her in a duel and beat the her, earning her respect eventually culminating in her recruitment as his Amica later on.
Upon graduating middle school, he enrolled in Tokyo Butei High as a member of the Assault department, much like his brother. When taking the entrance exam for the school, he met Reki for the first time at Futoukita platform on Academy Island. Later, Kinji would meet Riko Mine and Ryou Shiranui for the first as well as Shirayuki again, who put Kinji under Hysteria Mode before taking the Assault Exam. Then, while under the influence of Hysteria Mode, he took the Assault Exam in a 14-story building where he single-handedly caught all the other Assault exam candidates and even defeated the five instructors hidden in the building earning him an S-Rank. Later, he would get into a Lumberjack duel with Gouki Mutou over Shirayuki resulting in them becoming friends. It was during this time period that Kinji would work together quite a bit with Reki, where they were known as the "Golden Duo." 
However, school life again would take a turn for the worse for Kinji because his older brother was reported as killed in action from the Butei Killer, where despite saving everyone on board, Kinichi was ridiculed for losing his life and Kinji became the target for the ridicule as well by the media. After losing his only family, Kinji was forced to suffer alone and harbored a deep hatred towards the Butei for causing Kinichi to lose his life. This would cause him to transfer out of Assault to Inquesta, throw away his family heritage, let his reputation to those outside of Assault to plummet severely, allow his prestigious S-Rank to drop to E-Rank, and sought to transfer out of Butei High altogether into normal life.
- Chugaku Akamatsu's next light novel series, Yagate Maken no Alicebell; share the same universe where the protagonists crossover at some point.
- Its revealed that 3 years later from the novel series, Kinji enrolled into Tokyo University, while a member of the Security Police.
- In Volume 12, Kinji would succeed in his goal of transferring out of Butei High.