The beginning... was amazing. Hands down. Unfortuneately, the rest of the manga had left a little something to be desired.
It started out great. I was addicted, and reading these chapters like my life depended on it. The middle was alright, a little overdramatic-y and slightly confusing, but I hoped it would get better. The ending... was paled in comparison to the beginning. The ending was so confusing, and somewhat felt so rushed, like the mangaka just wanted to finish quickly and come up with an ending that would leave everyone happy. It was a nice ending, it's just that there were too many loose ends and everything got extremely complicated with the whole demon king thing. It started out so cute, and so amazing that everything else was completely blah after it.
Hiyo was useless in all of it. And in the end the mangaka tried to make Hiyo more than the girl that was important, and it was so abrupt it wasn't working. Then Kurou became easily beaten. He was getting smacked around all over the place near the end, and then suddenly, he was all powerful. It would have been nice if it was consistant. But it wasn't, and that was a huge turnoff for me.
Over all, the manga was okay. It had a lot of potential, and then it failed towards the end. Just slightly disappointing. Sorry if you're a fan... =[