I really want to like Whirlpool stuff, I do. But I just can't. The story here is at least a slight bit original and the art is decent too. But dear god, the story is so boring and the characters are (mostly) generic. But hey, maybe I'm just salty that they effed up Neko-nin so royally.
Bottom line: If you're proficient enough in Japanese, give it a hard pass. If you aren't (or just care about the ecchi) maybe check it out.