Read for the monster (mermaids with monster forms) girls and art. The art was some of the best I've seen in a story, each character being a different sea creature allowed them to be immediately recognizable. The sceneries in the undersea city, the classroooms being bubbles in an etherial sea, the curved bookshelves of the school library as books stretched into the sky, it was all magic. The multiple night sky scenes, both above and under water, are an absolute treasure. This is a series that can be read just for the art alone while disregarding the story. Because damn was the story disappointment. This isa harem series, but its clear who will win from the start. In the first place most of the sea creatures didn't see Minato as a love interest but rather as a tool to get up to the surface. Its made more saddening when Minato cooks surface foods for his classmates and speaks so grand about the surface world when its know they won't actually be able to visit it.

In that regard such an interpretation may be wrong, as the primo's plan seems to be a eugenics project to allow all mermaids, not just the primo, to go up to the surface. This interpretation is optimistic, but gives most of the losing girls a chance to enjoy the surface. And the chance for other humans to date cute mermaids.

These weak points in the story are saved by the artwork, this being some of the best in any harem or romcom manga as a whole. Its not a great manga but still good in its own right a worth a read.

7/10.