Tanizaki Junichiro is a kindhearted eighteen-year-old. He is a member of the Armed Detective Agency. He has a younger sister named Naomi, whom he cares for dearly, but he's very very uncomfortable with her constant advances. He is afraid to be alone with her because of that. However, he's very protective of her, and is easy to anger should Naomi face harm. He is somewhat effeminate, but identifies as a demiboy and uses he/they pronouns. Tanizaki is meek and mild, a people-pleaser at heart.