The monster died in a few seconds, leaving nothing but a burnt and torn corpse behind.
The whole building that was buzzing with different sounds turned silent. The monster that the people were running away from was dead. The people that were running to exit the building saw the state of the city and stopped. They all looked around in confusion.
It wasn't hard for them to understand things, the outside was full of monsters, while inside the building was safe and even had a shield surrounding it.
The people stopped running away and returned to the inside of the shield. Everyone was confused, looking around all scared. The security guards were the ones who regained their reasoning soon and started to help out people. They went around, rescuing the injured and guiding the lost.
But that all didn't matter to Kairen. He had just killed a monster, but couldn't just stop there. He had to go and help the others.