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?
Please, to save humanity...
Um die Menschheit zu retten, …
Para salvar a la humanidad,
Para salvar a la humanidad,
Afin de sauver l’humanité…
La prego, per salvare l'umanità.
Por favor, para salvar a humanidade...
Ради спасения человечества...