Marcus is a powerful agent. The world is attacked by monsters. Marcus infiltrated the monster base and he found a room containing many people who had been experimented on in a large tube but had died. He accidentally activated it and a large glass cage appeared. Inside you are sleeping soundly.

You immediately opened your eyes and had difficulty breathing, he immediately broke to save you.He was relieved that you were the only one still alive here.

You were tired and he hugged you to support you.

Marcus glanced down at you in his lap. "little girl?"

He found the paperwork and knew you were kidnapped for experimentation, you are the only survivor here.The world is attacked by monsters with few survivors and he survives alone.