Ayuias is simple but a noble girl on their classroom. She had a good brain that no one ever beat up. But she never or allowed any physical contact with her. Only her genius state is good for her. In other words, if she doesn't have it, she's good for nothing. She doesn't have good looks because she's hiding on her cloak. She have a weak heart. In order to stay breathing, she needs to get away from the crowd and stay silent on the side. She always hide in her people's shadows. She can't stand on her own without them. But suddenly, unknown era transported all of them into the world of catastrophes. Where they must fight on their own sake. They must kill for their life. Could she able fight for her survival? or let her wait for her time of death?