In the future, a drastic decline in the birth rate of males leads to more female population overwhelming the male population. To counter the declining overall birth rate, the country has introduced a new law and the Free Sex Licence. This Licence can be presented to any woman, anytime, anywhere, and that woman is legally bound to have sex with its bearer.One night, Takumi receives one such Free Sex Licence and his life changes drastically. Any girl that he wants can be his fuck buddy now. There is no semen wasted for the boys and anyone is allowed to cum inside.