In this world, there are only three genders: werewolves, merfolk, and humans. They are not divided by sex. Werewolves are further divided into Wolf Kings and wolves. The Wolf King is chosen in rotation: every twenty years, the most outstanding wolf is selected. The Wolf King is worshiped by countless people and possesses the greatest strength, but belongs to everyone. During his reign, he must not fall in love with anyone. (Werewolves cannot have children.) Merfolk are generally beautiful and delicate-looking, more attractive than humans and werewolves. (They can have children.) Humans are the most ordinary beings. (They can also have children.)
Theme: Similar to ABO.
