卒業までの1年間、ここにいる20人の男子全員とセックスします

あらすじ

"I'm Kurama Azumi, the new transfer student. Before I graduate, I'll be having sex with all twenty boys in this class."

She is a young woman with an unfashionable hairstyle and gloomy atmosphere, so her assertiveness is surprising. The classroom falls silent as she introduces herself.

Within a few days, she has sunk her poisonous fangs into the homeroom teacher. Afterwards, she proceeds to rape each boy in class, as promised.

Because of the sex, relationships between the class begin to devolve. Eventually, her true intentions emerge...