It's not uncommon to find shojo manga based on fairy tales like "The Little Mermaid." What's less common is finding one that changes it so much, modernizes it and still make it a legitimately entertaining manga to read.
MERMAID BOYS (Mamaido Boizu), by Yomi Sarachi. First published in 2016 and first published in North America in 2018.
PLOT:
Prince Naru has always been fascinated by the human world. Lately, though, he's been fascinated with a human girl named Nami, even more after he saves her from drowning. He's so determined to be with her that he trades his manly good looks to a sorcerer to become human, but Nami is far from the delicate maiden he presumed her to be. Will Naru be able to win her heart within a year's time, or will both he and his romantic dreams turn into sea foam?