In the Land of Whirlpools, deep within an underground tunnel, stood a laboratory.
One side of the laboratory connected to the tunnel, while the other echoed with the roar of water, seemingly linked to the sea.
A figure in a white robe was busy at an operating table.
This laboratory had not been built long ago, and Orochimaru had been extremely busy lately with no time to come here, so it had temporarily become Amachi's personal domain.
Every day, he sent his Fishman subordinates to attack and capture civilians from the Land of Whirlpools for modification, then dispatched the stronger modified Fishmen to continue capturing people.
The cycle repeated without end.
Though rather mechanical, he enjoyed it immensely, because this was the work he loved.
"Very good. This time, the dorsal fin implantation has been improved. It will definitely be stronger than those defective products from before!"
Amachi set down his tools and carefully examined the half-human, half-fish specimen on the operating table, his eyes filled with anticipation.
"Whether they're strong isn't all that important. Couldn't you at least make them look better? You know, being handsome is a lifelong pursuit!"
A teasing voice came from outside the laboratory door. Almost at the same moment, the door let out a thunderous crash.
Bang!
Kaguya Black Bone withdrew his right foot, and the four of them stepped through the collapsed door.
"You people are..."
Amachi turned around, and his expression changed drastically the instant he saw the forehead protectors worn by Araki and the others. "Damn it! Why are you Mist Village ninjas always haunting me?!"
He immediately pressed the switch in his hand. The doors of ten cylindrical water tanks lined against the wall slowly opened, and one Fishman after another, their bodies covered in fins and scales, emerged.
"Hmph!