Yukito's parents are the leaders of a cult. After he gets sacrificed, he gets reincarnated into another world where religion doesn't exist and porn books are akin to a child's doodles.
Ko, a human boy, falls in love with Nanakusa, a vampire girl, and wants to become a vampire too, but Nanakusa invites him to her abandoned building just to taste the sweet blood from her neck.
Tigre, a young noble, is captured by a beautiful female general from an enemy country. Though enchanting, her curves aren't the only dangerous thing about her. She's backed by an army of desirable warrior-goddesses called the Vanadis!