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?
Mizuhara-sama, let's start 
by having you take a shower.
Meister Mizuhara.
Señor Mizuhara,
primero debería ducharse.
Señor Mizuhara,
primero debería ducharse.
M. Mizuhara.
Signor Mizuhara.
Mizuhara-sama, primeiro
eu peço que tome um banho.
Мидзухара, предлагаю вам сперва принять душ.