Ahhh this is really sweet! I love the character designs and how you've used elements of various sea creatures around them - I particularly like Mihashi's jellyfish hair. And the colours are so beautiful - the purples and the light aquas and the green. The sense of movement and floatiness in the curves of each stroke is really lovely and I adore how the sea has been painted here - there's just such a nice atmosphere to this piece <3 And the pun at the end! I really like how you built up a very fairytale-esque scene but injected it with some classic Oofuri humour and subverted some of the common tropes ;)