Gender-Bender

He reincarnated into a hunter world and became an underwater hunter.    There were only 20 people in the entire country in this minor profession, but it didn’t matter. He liked the sea.
    “Crazy! There’s a real artifact?!”
    “Ahahaha!! How much is all this worth!!”
    But then, the Great Diving Era began.
    “Ah, it’s so beautiful… I want to see more, more…”
    “W-What is that!! Save me!!!”
    “Aaaargh!!! My head!! It feels like my head is going to explode!!”
    …It would be better not to go in there.