Mingi whispers his song louder, loud enough to lure the human closer, though he's careful not to sing it too loud. It has a tendency to kill friend and foe alike.
The man obeys, hanging onto Mingi's every word. He takes a step closer, then another and another until he's practically leaning over the railing. He's close enough now that Mingi can see his stunningly wide eyes and his full lips and it's almost a shame that his life will end here, for he is the most beautiful thing Mingi thinks he's ever laid eyes on.
He reaches out a clawed hand to touch the man's face. It's soft and smooth. Mingi is as captivated as the human seems to be and for a split second, the man's eyes are lucid. They are lucid and Mingi realizes he's stopped singing. His voice escapes him and his song dies in his throat and he doesn't even notice until San's voice is gone too and with it, the spell keeping the human obedient and still.
OR
A pirate tries to capture the siren trying to eat him and everything goes to shit for everyone involved.