Also known as: 白土師オウカ, 土のオウカ
Playable character in Choukou Taisen Escalation Heroines.
Known by the epithet Ouka The Earth, Ouka is the sixth-ranked officer of the Jogenshu (Crescent Moon Blades) Faction, serving as a member of the Council of The Wind, Forest, Flame, and Mountain. She shares this membership with Yanagiha Fuuka, Asano Ayaka, and Asou Gouka.