I did like it even though it was kinda bad.
The story had many plot holes and this show is way too long. 52 episodes for what? The goal was to gather the seven mermaids and when they finally meet the fourth mermaid, she doesn't even join them. They meet the last three near the end so idk. Mermaids are not supposed to be able to sing well without a pearl yet Sara is somehow able to wow that's great
The sound exists
The character design is alright. I don't think the creator knows how to make guys they all have the same generic haircut except for the dudes with long hair. Also the other mermaids just kinda exist idk. You give Karen an image song but not Coco or Noel who have actually good voices thanks my ears are gone
Don't watch this unless you like mermaids and magical girls and singing