She has a harem of Extars (other girls) – called the Adel ('nobility') – that she uses all at once when fighting her opponents. She strives to bring Mermaid under her thumb, but is later seduced as a willing puppet Governor by Momoka. Kasumi is the commander of Wärter who is opposed to Charlotte's despotic regime over Mermaid's residents. She is in a relationship with Hibiki who had been so traumatized by her experience at Mermaid that she refused to leave her room.
