“If a zombie and vampire went all out, which one would win?”Those fateful words began a serious sisterly fight between zombie little sister Ayumi and vampire older sister Erika.The entire city has been recreated using the environment simulator created by the main character and a virtual horror movie begins with the fleeing residents as the targets!Characters:Ayumi: Zombie girl.Erika: Vampire girl.Satori: High school boy with a zombie little sister and vampire older sister.Maxwell: Support program developed by Satori.