[ Hentai Sex Manga ] Zettai Junshu Kyousei Kozukuri Kyokashou!! - 01

Based on the erotic game by Softhouse-seal Grandee. Humanity is on the verge of extinction in the near future due to a sharp decline in male birth rates. To combat the country's declining overall birth rate, the country enacted a new law and the Free Sex Licence. This Licence can be presented to any woman, at any time and in any location, and that woman is legally obligated to have sex with the bearer. Takumi receives one of these Free Sex Licences one night, and his life is forever changed. He has sex with Sara, a brilliant woman who is also interested in sex, and Misaki, the elder sister of his childhood friend Rin. Rin, who is secretly in love with Takumi, is agitated by these events. However, Rin's first time is done in public when Takumi inadvertently displays the license in the classroom...