高槻 晴菜

The oldest of Takehara's younger sisters. She teases him a lot so when she tells him that she wants him to have sex with her, he thinks it's a joke. She gets mad easily.

During sex, she duplicates a younger version of herself to let Takehara enjoy taking her loli virginity again.

During one of the endings she returns to the demon world to become the new demon queen. She brings back Takehara's daughter to rape her father.