TL;DR for those who watched S1 or like the manga: Same kind of comedic adventures as S1, much more comedic than the Manga. Also has an original ending (source is ongoing).

Takane no Hana San 2 is a continuation of the prior season just this time following the gang through their HOP project and other trials.
Can't really say much about the story beyond that, it's just a good comfort watch haha.

Characters are the same, all funny with their own quirks.
Audio is still anime like, and if you don't know what I possibly mean, it's the overuse of sound effects. Not a bad thing considering the story, just very out of the J-Drama norm haha.

Overall, heartwarming. Despite there being no JP subtitles, I recommend this to Japanese learners, the language used is easy enough for pure raw.