World's End Harem

Mizuhara Reito is an ordinary boy who wakes up in a world of 5 billion women and 5 men. Now its 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?

A bullied teenage boy wakes up in the future after going into cold sleep. His new high school is filled with nothing but girls, and more than a few of them seem to have an interest in him, especially his old teacher.

Reito goes to visit the widow of the very first victim of the MK Virus in Japan. The widow knows more than she should, and is secretly in contact with someone very important to him...

The rivalry between the girls at school heats up as they all strive to be the one to mate with Shouta.

As a messenger from UWs global headquarters arrives in Japan, Reito finds the secret behind the creation of the MK virus.

As UW World Headquarters solidifies its control over Japan, Reito escapes to Taiwan, where he will finally reunite with his beloved childhood friend.