Kinji Tohyama

"The only work I hate... is that of a Butei."

Kinji Tohyama (遠山 キンジ Tohyama Kinji) is the protagonist of the Aria the Scarlet Ammo series and a student at Butei High school. He was ranked Level E (the lowest combat rank) due to missing the Butei evaluation exam. However, under certain "conditions" his level raises to the highest combat status of Level S (the highest combat rank). He is currently enrolled in the Inquesta department.

History
When Kinji was in middle school, he was constantly harassed by girls who had found out his secret. He was their "personal ally of justice," and they would purposefully trigger his Hysteria Mode in order to force him to help them. Due of this experience, he does not enjoy the use of Hysteria Mode. When he first enrolled in Tokyo Butei High School, he joined Assault, but after the disappearance of his brother, Tohyama Kinichi, he wanted to quit being a Butei, and he transferred to Inquesta. He plans on quitting his job as a Butei and wants live a normal life by transferring into a normal high school.

Plot
In January, he had just moved into an Inquesta dormitory room meant for four. However, because no other boys from Inquesta had requested for a dormitory, he was staying there by himself with no roommates before Aria moved in. From then on he and Aria pursued the case of the Butei Killer.

Before those events he was searching for details concerning his brother's, Tohyama Kinichi, death, but found out through Riko that his brother is alive and is a member of IU. He also admires his brother Tohyama Kinichi deeply, yet fought against him for Aria's sake.

In Volume 7, he became part of Team Baskerville. Team Baskerville consists of him being the leader, Aria the vice-captain, Reki, Shirayuki, and Riko as members.

Equipment
His duty-issue weapon is a Beretta 92FS Inox (which was given an illegal Machine Pistol conversion and referred to by him as Beretta Kinji Model), and a butterfly knife. In Volume 6 of the light novel he obtains a black Desert Eagle (which was similarly modified to fire in burst as well as auto) which belonged to his father and a double-edged seax, (modified with a hidden sheath and a reinforced rubber handle) which belonged to Sherlock Holmes, to add to his arsenal. With his added arsenal and new weapons, he became the third Quadra.

Hysteria Mode
When Kinji is sexually aroused, he enters a state known as "Hysteria Mode" in which his cognitive and physical abilities increase to around thirty times his normal state, which allows him to perform feats of near-superhuman strength and skill, such as accurately shooting up the muzzle of an enemy gun, swinging his knife at supersonic speeds, and accurately shooting enemy bullets out of the air.

Hysteria Mode is a genetic trait that all members of the Tōyama family possess, and is stated to be an extremely highly evolved version of the natural male instinct to protect women. As such, when in Hysteria Mode, Kinji's major weakness is the fact that he cannot directly harm women, though he is still able to fight and restrain them without directly hurting them. In addition to this, Hysteria Mode also causes Kinji to develop a suave and seductive attitude towards women, which makes him very attractive to them while in Hysteria Mode.

Aria H. Kanzaki
He has accepted the mission of clearing Kanzaki Kanae's name by request of Aria plus Kinji appears to care for Aria to an extent and with the progresso of the story he develops romantic feelings for her. Also Kinji and Aria shares a kiss, which turns out to be the first for both of them.

Trivia

 * Following the laws of Anime Physics, Kinji is known for being---dense. He is somwhat, unaware, yet aware of the girl's feeling towards him. Like recent 2011 anime like IS, or probably The World God Only Knows and Baka to Test to Shoukanjuu , the male character is depicted as a very dense protagonist.