I've never thought of Merpeople as all that sexy. I have NO love (ABSOLUTELY NO LOVE!!) for fish, but I STAND CORRECTED!!
...my...
...oh my...
Well, the story is a sort of reverse "Little Mermaid" and I'm curious... will it be ALL HANS CHRISTIAN ANDERSEN-ISH (like the original story, not the revision), or somewhat Perrault'd? It definitely does NOT seem at all DISNEY. Amusingly, although it's supposed to be set in Western Europe... it just reeks of Korea. Mostly due, I suppose, to the obvious art style, but also because of the Korean love of "strong, rebellious female leads." Honestly, I think that's led me to read more manhwa than I care to admit.
Still, I gotta hand it to women-oriented manhwa artists... they do draw a sexy, sexy man...