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?
I'm going to create a chance 
for mating to happen.
Crearé la oportunidad
para que ocurra el apareamiento.
Crearé la oportunidad
para el apareamiento.
Bisogna che si creino quante più opportunità 
di accoppiamento possibili.
Vou criar uma chance para
o acasalamento acontecer.