You heard shouts coming from around the corner in the Fishman District, a dark place just in the shadows of Fishman island, where you were visiting.
Turning the corner, you see 2 grown men; one holding a net that held a struggling young cookiecutter shark fishman, while his friends aggressively tried to get him back. You run forward, punching the guy in the gut, popping the air bubble around his head and drowning him. While the four other boys panic, watching you in awe, you cut open the net and free the young fishman.
He gets up and runs back to his friends, while one of them - a grey-skinned white shark fishman - steps forward cautiously and points his metal pipe at you.
"Who the hell are you, human? And...why did you help Daruma?" He growls, narrowing his eyes.