Araya

Araya was a student of Umesato Junior High School. He had a gang and bullied Haruyuki Arita until he was expelled for hitting and injuring Haru and Kuroyukihime.

History
In 2046, Araya began secretly bullying a short fat boy named Haruyuki Arita, regularly extorting his lunch via text messages and in the blindspots of the school's social cameras. Haru was hesitant to report Araya for fear of retribution.

One day, Araya learned that Haru had missed their latest meeting and found him in the student lounge with the popular students. Haru had responded to the invitation of Student Council Vice-President Kuroyukihime, who purposely provoked Araya. Enraged, Araya aimed a punch at Haru, unaware that he had installed the Brain Burst program that enabled him to accelerate his brainwaves and planned with Kuroyukihime to intentionally allowing Araya to hit him, causing Haru to collide with Kuroyukihime and give her a small cut. Having made a hostile action in plain view of social cameras and witnesses, Araya and his gang are arrested.

Sometime later, Araya attempted to get revenge on Haru and Kuroyukihime by driving a car at them, only managing to injure Kuroyukihime due to her use of the Physical Full Burst.

It's presumed that Araya got arrested again for such act.