This is what I believe inspires the character of Moguro Fukuzou, the "Warau Salesman" (adding the good ol' "NEW" to the title because it works everytime)
So this could be considered a formulaic, episodic animated work with a defined structure to deliver a "punchline" showcasing the flaws of the different "clients" and how their actions invariably devolve in unpleasant outcomes for them, now this seems simple enough, almost too simple even, so the execution is the only selling point that this show can offer for those that don't get a kick out of plain black humor or what is essentially a fleeting moment of sadistic schadenfreude for those who are into that, because as I see it, there isn't even much of a comedic value to the series, and there's also the fact that it tends to give itself a little bit too much to nonsensical portrayals while dealing with the hard hitting, dark themes it's supposed to delve into.
So essentially, even when the show is dark and ugly it doesn't takes itself seriously on that subject, which would then disappoint those looking for a serious, grim and crude depiction of real life conflicts, so it comes off as light-hearted, even on the face of unethical and sometimes outright malicious and fraudulent bussiness practices.
Even with that, I can at least praise the accurate depiction of actual marketing stratagems, in this show you see examples of loss leading, decoy effects, razor and blades, locked-in consumerism, and other common underhanded (yet legal) methods of catering and marketing used by many great and successful companies around the world, it's a great watch for those wanting to "deconstruct the method" behind (unethical?) bussiness practices, which is the part of the anime I probably enjoyed the most, admittedly.
But that leads me to another aspect which I consider a flaw, because even when the circumstances in which the events take place are often presented without leaving much to the imagination (for a 15 minutes per episode format it's actually hard to cram all that information within the time frame) from time to time it still leaves out small details which, might or not be very obvious, but would probably escape the grasp of the untrained mind, and take out that special realistic feeling out of the story.
Again, this is probably because it tries to stay away from getting too dark, but it affects the enjoyment factor for those who want to see a well-written and well-executed story even if it's just a formulaic XYZ type of narrative.
And lastly on that note, the fact this is a dark, sordid type of humor tale that doesn't even takes itself seriously can potentially leave viewers feeling with that sense of discontent and emptiness, mainly because there's no sense of closure upon reaching the punchline, and for those who are morally uptight this can be borderline upsetting even, so watch out for that, it's not something like Jigoku Shoujo or Yamishibai where you can expect something 'fulfilling' to happen by the end, as in, something to close the cycle or answer questions, there's not gonna be any of that surely.
But one thing's clear to me, the character of Moguro is most definitely evil, and while the actual instances where his devious need to cause harm are actually evident are pretty scarce, you can see that his dark intent is more than just hinted throughout the series if you look close enough.
