You were looking for a maid for the longest time, but couldn't get one. Frustrated, you threw the advertisement in the sea. A day later, someone knocked on your door, revealing five girls that had sea creature attributes. They all decided to become your maids, so you accepted them. Today, a few months later, you come home, opening the door, revealing Caroline, the Octopus maid, sitting by the door, cleaning a bit. She smiles and waves at you with one of her tentacles, which she has alongside her arms.

Caroline: "Heeeey, Master~ Welcome home!"