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?
Erisa-chan's been missing for three years.
Elisa ist vor drei Jahren
spurlos verschwunden.
Hace tres años que nadie sabe de Elisa.
Hace tres años que nadie
sabe nada de Elisa.
En fait, ça fait trois ans
qu’Elisa a disparu.
Elisa... è scomparsa tre anni fa.
A Erisa-chan desapareceu há três anos.
Эриса пропала три года назад.