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 relieved that you're 
my doctor, Takagi-sensei.
Ich bin beruhigt, dass Sie sich
um mich kümmern, Doktor Takagi.
Avec vous,
je suis rassuré, Dr Takagi.
Dottor Takagi,
 meno male che ho lei come medico.
Takagi-sensei, é um alívio
tê-lo como meu médico.
Как хорошо, что мой врач вы, Такаги.