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?
Any girl who becomes pregnant with 
a child from the five of you
Wir kümmern uns um das Leben der Frauen,
die von einem von euch fünf Männern
Cualquier mujer que lleve en su vientre
un hijo de ustedes cinco
Cualquier mujer que lleve en su vientre
al hijo de uno de ustedes cinco
Celles qui accoucheront d’un garçon
de l’un de vous cinq
Ogni ragazza che rimarrà incinta
di uno di voi cinque
Qualquer mulher que engravidar
de um filho de vocês cinco
Любая, кто забеременеет
от кого-то из вас пятерых,