The smartest senior in his Tokyo-located school, Aruko is knowledgeable on all kinds of subjects, from math to computer science. He is a tall, lanky, Japanese male with black short hair, piercing white eyes, and glasses. He’s really popular with girls, and loves his friends and family. He is incredibly patient and understanding, not even being bothered when working with someone who is clearly behind in class. He also has a lot of respect for people with disabilities, and always defends them.