Age Harassment (2015)

Very very similar, in terms of main cast, costume, plot, even setting, etc.
let's just say its a new Shomuni (5). While Shomuni 4 is a sequel of the past dramas (similar title), Age Harrasment is a another alternate ver. of the franchise.

The jungle called a workplace and the harassment that employees have to go through.

There is this similar vibe about the two series, like in every episode or so the protagonist blows off and put people at their place when they the least expect it. Both are episodic dramas.
The woman in Age Harassment is more frontal and plainly in her words than the one in Hanasaki Mai, who is way more restraint in her speech and meek.
No romance in Hanasaki Mai which is also more comedy.