Eri Kitamura
Four pieces of theme music are used for the anime television series; one opening theme and three ending themes. The opening theme, used for all but episode twelve, which did not have an opening theme, is by Eri Kitamura, Kei Shindō, and Mai Kadowaki. The first ending theme, used for all but two episodes, is by Little Non; the second ending theme, used only for episode six, is by Chata; the final ending theme, used only in episode twelve, is by the same three who sing the OVA's opening theme. The OVA's ending theme is , by Little Non. The second season OVA's opening theme is "Guilty Future" by Eri Kitamura. The second season's ending is "1, 2, 3 Day" by Little Non; except for episode three, whose ending theme is "Yoridori Princess" by Eri Kitamura, Kei Shindō, and Mai Kadowaki. In the 2011 OVA, "Rettsu! Ohime-sama Dakko" is used as the opening theme while "1, 2, 3 Day" is used as the ending theme.