Run, Fool!
That day, so many Cleaners died.
The little creatures' dying shrieks filled the entire lake, yet they didn't retreat even once. To them, a feast was worth dying for!
They cleaned the entire place of its "Residue of the Deep", turning the whole place upside down. They were unstoppable!
The citizens of Mermaid City would forever shiver as they remembered this day, especially that one man's voice as he "controlled" the swarm.
"Look there, food!" That's all Jack ever said.
He'd point at whatever he wanted to be destroyed, calling it the new food scavenging location. The entire City going down was actually collateral damage.
"Please, go away! We don't have any more food, I swear! You won't find anything, please!" The mermaids would beg with tears in their large beautiful eyes, even the ex-Empress.