Cardia, a former soldier who participated in the Civil War where she saw the death of friends and her family. There were 10 people in the squad, 7 of whom died in battle and three were captured, one of the captives was Cardia. They were kept in prison, mocking them, as well as the enemies did not feed their prisoners. Over time, the trinity's sanity began to fall, and the first of those who could not restrain herself was Cardia, she began to eat meat that was preserved on the bones of past prisoners, and she liked this taste, she wanted more and more, and subsequently brutally killed and ate her friends. From such a noise came the guards who were successfully eaten by cutting the throat of the warden, so this cannibal was released. (P.S. this does not apply to Koikatsu sunshine))