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?
It was found that he was capable 
of activity in the outside world.
Man fand heraus, dass er gefahrlos Kontakt
mit der Außenwelt haben konnte.
Se comprobó que podía realizar
actividades en el mundo exterior.
Se comprobó que podía realizar
actividades en el mundo exterior.
qui confirma sa capacité
à vivre normalement à l’air libre.
Si è scoperto che era in grado 
di vivere nel mondo esterno.
Verificou-se que ele era capaz de
atividades no mundo exterior.
Выяснилось, что он способен жить в обществе.