Aren currently lives in his father's childhood home. [3] The house's appearance is a reference to that of Baki Hanma, protagonist of the Grappler Baki series. Due to Toritsuka Reita ending up in Class 2, he is the first PK Academy transfer student to end up in Class 3. Aren in his previous school wore the typical delinquent clothes. He sported a pompadour hairstyle, and wore a modified school uniform with his pants looking more like an over-sized skirt. After moving to PK Academy, Aren changed his looks into more of a normal student by wearing fake glasses and sporting his natural dark violet hair. In school, he wears the standard uniform of male students in PK academy. According to Touma Akechi, his uniform is too tidy. While in days off, he wears long sleeves; possibly to hide his scars which were first seen by Shun. He is very built and muscular. Enchanced senses: As a result of his life as a delinquent, Aren developed great intution and senses that allows him to feel when he is being followed by someone who is hiding near to him. His instincts are so advanced that even Kusuo, a powerful psychic, is amazed by this capacity of Aren, correctly sensing him twice, the second time he followed him to a park and if it wasn't because he was using invisibility Aren would've discover him. His name is an anagram of the Japanese transcription of the English word "clairvoyance" (クレヤボヤンス, kureaboyansu).

Like a typical delinquent, aside from being strong and being called in fights, Aren is short tempered when someone is being rude to him. He had a hard time controlling his temper at first when he moved to PK Academy. He also has tendencies to grab anything near him and throw it to the person he's angry at ( Takahashi was nearly killed by him, just because they brushed shoulders). Aren also sometimes makes an evil, devilish face when he's angry with someone or is opposing someone, which scares them. He is however, naive and childish when the talk is about motorbikes. He is willing to help those who want to have a license like Shun and Kusuo whom he went so far as to come with them when they took the test for driving licenses. Aren displays weird antics as he doesn't want to sit down in the house of other people. Later on, he is shown to be calm and collected when talking to others. Hand-to-hand combat: As a former delinquent, Aren is a strong and very skilled combatant. When he was at third grade he managed to defeat all the boys and became their leader. Among many delinquents from his former school, he is considered as the strongest, having many delinquents fear and respect his strength. Even after abandoning his life as a delinquent, Aren maintains his skills as a fighter, capable of defeating a large number of people with barely a couple of blows, with most of them losing their conscious after receiving his punchs. At PK Academy, he's been challenged to a duel by several students, winning every one of his duels. After reading his love letter from "Kumiko", he came up with baby names that are named after an aquamarine gem: a son named Akua and a daughter named Marin.