A Medium-Low voice. 

A student from Byakudan Senior High School, who accompanies Yuka when she was separated from Satoshi. He initially seemed like a philosophical and strong ally. Deep down, however, Yuuya is a sociopath with no understanding or comprehension of morality, affection, social interaction, or the value of life. Violent from childhood, his acts ranged from trying to beat a student to death in elementary school to mutilating animals. Many of his feelings of disdain for others stem from his strange perception of 'truth'.Due to his lack of understanding of others and the world, he created a false front that he projected out to the world after childhood, acting as the loner while he studied others and their interactions.After coming to Heavenly Host, he stripped his inhibitions away. He decided that, like animals, people were only honest when at the brink of death. They showed their inner selfishness and engaged in true, honest dialogue, and it was through these critical moments that Yuuya could understand them and in effect, himself.