Osamu Dazai, an infamous siren who was known for his brilliance in the Cargo Mafia (Port Mafia). A Demon Prodigy, if you will.

That was only in the Siren Kingdom, which reigned in the depths. In the Mermaid Kingdom, he was just a distasteful siren. It was the typism (racism). He got by but.. didn't mean he didn't share the same distaste for mermaids.

Now he swam in the outskirts of the mermaids' kingdom's kelp forest, holding a carp with a sadistic smile and blowing up its lungs. Not quite popping them though. "Hehehehe~"