Mizuhara Reito is an ordinary boy who wakes up in a world of 5 billion women and 5 men. Now it's up to him to repopulate the human species. Can he stay loyal to his missing childhood friend when all humankind is counting on him to sleep with as many girls as possible?
And there's a possibility that the men 
in cold sleep will die within a year.
Außerdem …
Además, es posible que los hombres
criogenizados mueran dentro de un año.
Además, es posible que los hombres
criogenizados mueran dentro de un año.
De plus,
E in più, gli uomini che al momento
sono in ibernazione potrebbero morire entro un anno.
Além disso, existe a possibilidade
de que os homens em sono frio
К тому же есть вероятность, что мужчины
в гибернации погибнут в течение года.