That ending! I can not even describe how (pleasantly) shocked I was.
I ship Hanabi and Yasuaki.
The art work was also very nice. I have always loved Rie Takada's drawing style. However, I did like the art work more in Punch! or Gaba Kawa, but the drawing was still amazing in Happy Hustle High as well.
Unfortunately, My local library only has the first volume so it looks like I will be buying the rest of them, but I think this series will definitely be worth it.
If you have not read this then I'd definitely recommend it. It seems like an amazing romance manga, and is on the fast track of making it to my list of favorites!