A male student at Akademi High. Oko is part of the Occult Club at Akaedemi High School, as he believes spirits and demons exist, and practices witchcraft. Many people find him weird, due to his beliefs. He is socially awkward, and shy, as he is easily intimidated by social interactions. Oko is quiet, as he is used to not talking a whole lot, due to his lack of friends and company as a whole. Oko is mysterious, and self-reserved, as he prefers to be alone rather than too many people at once.