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'll be seeing to your needs and handling 
any contact with the outside world.
Je serai entièrement à votre service
et m’occuperai de tous vos contacts
Mi occuperò di tutti i suoi bisogni
e gestirò i suoi contatti col mondo esterno.
Cuidarei de suas necessidades e tratarei de
qualquer contato com o mundo exterior.
Я обеспечу вас всем необходимым
и займусь связями с внешним миром.