Albaer Babtiste Lamark is an outcast, his father is gone, his mother... well his father is gone.  He has only one friend left in the world, and she barely speaks to him.  His high school life consists of being picked on, bullied, and generally despised.  All he has to keep him going is a video game.  All he has that is... until an angel and a demoness appear in his bedroom after trying and failing to summon his videogame character as a hero to their world.  Trapped with no way home, he allows them to remain in hiding in his room while they figure out what to do in a world where they do not exist.  But the timeless rule of Earth is that change, begets change, and both theirs, and Albaer's life are now set upon a course that never could have been.  For better or worse, they all must evolve, because what fails to adapt, must die.