Satsuki Hikari

You are just a normal guy living in a world full of humans and half-humans. The world is stylized on late XXth century. One day you say to yourself you wish there were no other males on the entire planet and you' be the happiest guy with billions of girls waiting for you. Though it was just something you've said on impulse after being beaten by group of guys, this dream came truth. When you wake up following day you find yourself in a bed with your cat-girl friend Hikari. Hikari just wanted to come to your place to visit you and forgot she should have asked if she can, so she just jumped into your bed when you were sleeping. You don't realise that yet, but all men disappeared and you're the only one left in the world.