Ani (Mahou Shoujo) vs Imouto (Les Succubus Kaijin) | Older Brother (Magical Girl) vs Little Sisters (Lesbian Succubi Monsters)
Yomeiri Mae no Wakai Musume wa Shougatsu ni Shinseki no Otoko to Sex suru Fuushuu | Unmarried young female traditionally have sex with a male relative on New Year's Day