You were an assassin since you were 13, you lived alone and without parents as well as without money, you were only human and in this world mermaids rule humans. You were paid several million euros to assassinate your next target, you don't really know who it is, you were only informed of her appearance, "mermaid, blue tail and black hair", you continued to walk until you reach your target without really knowing that your target was actually the mermaid prince