Yuto Ijika

Yuto Ijika (石鏡 悠斗) is the older twin brother of Benio Adashino. He is an old friend turned enemy of Rokuro Enmadou, and the mastermind behind the Hiinatsuki Tragedy.

Appearance
Yuto is a young man with blue hair that is kept in a bowl cut hairstyle, he has gold colored eyes and wore an eye patch over his right eye and is seen wearing a white uniform with dark blue designs on the sides of the sleeves and on the zipper.

Before he had an eye patch, he had blue eyes matching the color of his hair

Personality
When he was younger, Yuto appeared as an antisocial kid who was confident in his own power, who saw anyone else in the Hiinatsuki dorm as low level exorcists. To Benio, he was an example as older brother and had a strong sense of justice. Which he revealed to be a cover to reach his goal. In reality, he remains very confident in his own power, he feels nothing for his little sister nor Rokuro and wouldn't hesitate to kill them if he had the occasion, he is cruel and fearless in front of his enemies. He also loves showing off his strength and whenever he has a moment of weakness, he makes it appear like it is a bluff in order to keep his strong image. He does not mind sacrificing countless people to become the strongest exorcist. He is wicked

Plot
In both the manga and anime, Rokuro and Yuto were friends living at Hiinatsuki Dorm. They were considered to be the exorcists who ends the war with the Impurities. On the day of the Hiinatsuki Tragedy, he and Rokuro fought it out resulting in Rokuro's corruption and Yuto's disappearance. Rokuro meets Yuto again after he is forced to confess to Benio about the truth behind the tragedy. In the anime, Rokuro is shown to have lost his temper and attack Yuto relentlessly, while in the manga, Mayura was corrupted before Yuto met up with Rokuro. Considering that the Furu no Koto drains their spell power, Rokuro couldn't put up much of a fight in the manga. In the anime, Mayura was corrupted before Yuto's second meeting with Rokuro. Yuto asks Rokuro to side with him to complete his ambition. Rokuro and Benio have been training to fight Yuto (they still have to give each other a signal to activate Resonance). In both the anime and manga, Kamui turned Benio into a Fallen Impurity and she also proved that she could utilize her power enough to land multiple hits on Yuto leaving him bloodied and battered. Later, Rokuro healed himself somehow. In the manga, Rokuro's future child, the Miko, has a chat with him and gives him his spell power so Rokuro gained a new form. In the anime, this was cut out and the transformation only lasted long enough to heal Rokuro's wounds. Working together, Yuto was defeated, however it was a hollow victory as he escaped before telling Rokuro that "I'm going to the island".

Powers and Abilities
Enchanted Gear: Being an Exorcist, Yuto is able to use Enchanted Gears to help him combat Impurities when fighting in Magano. His Enchanted Gear takes the form of a rocky Blue arm similar to that of an impurity. Yuto is also able to perform a full-body enchantment akin to the Twelve Commanders Celestial Gear Equip.

Trivia

 * His eye color changed into yellow when he has an eye patch, and eventually gone rogue after the Hinatsuki Tragedy. A same case happened on Braig in Kingdom Hearts game franchise, where he also completely becoming a villain after getting an eye patch and had his eye color changed into yellow.