C12 A Hardworking Maid and a Physically Weak Scientist

It's a cloudless blue sky.

There was no sound in the atmosphere. The sound of the wind and the chirping of the birds no longer existed. It was as if all sound had been cut off. It was a silent and oppressive feeling.

The high-pitched electronic voice ended the silence. In the next moment, four figures suddenly rose into the air.

The battle began