Jun'iku Bunjaku

Anime version
Sousou's trusted adviser and strategist who wears a cat-ears headpiece. She is in love with Sousou and does not mind being teased by her. She has a rivalry with the Kakō sisters due to the fact they are Sousou's cousins and are closer to her.

Visual Novel Version
The strategist of the Gi kingdom. Out of all of Sousou's subordinates, she is most likely the one who enjoys being teased by her the most. She starts to develop a small rivalry with Kazuto for Sousou's attention after being captured (in the first game) or when Kazuto serves as Sousou's advisor (in the sequel Shin Koihime Musou).

(Source: Wikipedia)