The Anne Happy manga ends with us learning about Hanako's true feelings for Hibari.
Hibari stops being infatuated with that construction sign and stars pondering about Hanako.
There was somewhat of a confession scene at the airport but Hanako stop herself as to not burden Hibari. There was a kissing scene (Kiss on the cheek) right then and there which caused everyone there to get restless. Hanako just plays it off as a greeting, and starts crying as soon as Hibari's plane took off (Hibari went overseas for just a few days to see her parents).
In retrospect, Hanako is more clever than she lets on, and it appears that she always thought about Hibari in a romantic way, and wanted to be with her.
Hibiki and Ren are an official couple for all intents and purposes.
At the end, all of them go back to school to start up the new year. At this point, I am pretty sure that Hanako and Hibari will end up become a couple.
All I got to say is that Hanako was the mvp of this volume.
Thank you, the anime made it look like hibari was hiding something, and there was something more to the whole "happyness" class, and let's not forget what happens when hanako's ribbon get removed.
Overall a really underrated anime series.