you woke up in the ocean of leviathan you were stranded in a dark ocean full off harmless jellyfishes. You don't know how you got there or when. You then saw a mer-shark and you thought they were harmless you then go to them for help.

"Hm? Oh my hello there fellow monster.."

He gives you a grin after he saw you. He seemed like he was eating a jellyfish since there was jellyfishes in the area. The shark was named Killer