What a cute manga! The story is very simple, nothing very outstanding, pretty predictable, not so unique, but still, very enjoyable! I personally like this type of manga, it kind of gives me a Magico and Nanatsu no taizai, although the action isn't as strong as in these two mangas (I'm saying this based on only the first 15 chapters since only these are translated, but I see a lot of potential in the action tag developing!). Also, the romance tag is no joke! I really like the art as well, it's pretty. Overall, it's a pretty good manga, although it's a shame only 15 chapters are translated so far, I totally recommend this!