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?
2040. the MK Virus, a virus with 
incredible transmissive properties,
Im Jahr 2040
En el año 2040, el virus MK, con
increíbles propiedades de transmisión,
En el año 2040, el virus MK, con
increíbles capacidades de transmisión,
En 2040, le virus MK,
au pouvoir pathogène virulent,
Anno 2040. Il virus MK, un virus
dotato di incredibili capacità di propagazione,
Em 2040 o Vírus MK, um vírus com
incrível transmissibilidade,
2040 год. Чрезвычайно заразный вирус УМ