斎野 九花

She is the gentle, kind, and incredibly gentle twin sister of Naoya.
She adores her older brother Naoya and is always by his side, both in the shadows and in the light, which has earned her the nickname of an older sister, despite her being the younger sister.

Due to her pretty appearance, she is immensely popular both in the downtown area and at school, but Konoka herself is completely unaware of this and has a somewhat airheaded personality, just like her brother.

Within her body she hides the Grimoire, the work and symbol of Itsukino, but she herself is not yet aware of her destiny.