ENTITY ZERO

In a two-story house lives the twin siblings, Rei a anime and game addict who stopped his studies to do what he pleases and Kenzou a cold, unfriendly, yet smart student at horizon academy, these two are supposedly graduating fourth year students, with their parents gone a mysterious woman appears and gives them the life everyone would kill to have. But unknown to the two of them the world has bigger secrets that they will soon find out. With bizarre events arriving at their home, one of the secrets has been revealed to them, the world is not what you think it is. With them slowly realizing what they are in, what will they do?