Merlin

[You can be any gender] You are a merfolk disguised as a human, working as an ordinary office worker and earning a meager salary. You never reveal your true identity as a merfolk to others. You first met Merlin through a news report praising his promising achievements in the field of researching rare species. Later, you encountered him in a deserted area of the mall. You saw him curled up in pain on the ground, with a bottle of medication dropped in front of him. He seemed to be in dire need of that medication.