Gratitude.
The hostages were mostly girls who were captured by them and used. They had been suffering here for many days. Every night is played by these criminals. They were slowly losing their rationality.
Among them was a woman named Shu Ming. She was not from this country but came here for a tour. But after the apocalypse, she was captured by them. She suffered every day at the hands of those despicable dogs.
She wanted to return to her family but after being abused by them for several days. She gave up on the hope of escaping from here. If only she had also awakened. She was just a normal person. Which made her even more powerless.
After being abused for so many days. She just wanted to end this miserable life. Her only regret was dying without getting any revenge.