Kareha Banouin was the Dominion and leader of the army against the rebel forces in Hod, and was the orchestrator behind the war being non-lethal. She wished to play with and fight against Retsumi Jugasaki, the general of the opposing army.
Kareha acted like a refined Japanese princess with a fake Kansai accent. Sometimes, she forgot to use her faux accent. In reality, she had a playful little devil-kind of character, just like Kurumi. In a school setting, she would be the type of girl who doesn't have many friends.
Although she wore a confident facade, Kareha was actually hiding fear because she was transforming into an Empty due to having her heart corrupted by love for the White Queen. Realizing this, she also refused to meet with Mizuha.
She sent Hod into an eternal summer so her time playing with Retsumi would never end.
(Source: Date A Live Wiki)
Content compiled by AnimeList.moe from publicly available sources.