Mine will be shorter than 90% of the reviews here.
I believe what threw most people off with this series was its genre.
Barakamon 80% slice of life; 20% Comedy
Handa Kun: 80% Comedy; 20% Slice of life
Of course, the above percentage I provided was solely based on my opinion. I believe most people hoped for a slice of life feel which exactly what Barakamon was but this series didn't deliver this. Instead, comedy moments took over despite the repetitiveness. Essentially, we all have a different opinion but this series took a different path from its predecessor; therefore, please try to watch this without comparing to Barakamon.