Started watching Takopii no Genzai.
It's surprisingly hard to watch, but not for the reasons you may think, The voice acting of the little alien is simply grating. Also, the way the alien processes the bullying and such borders on the absurd.
Granted, a hypothetical life-form from the happy-planet may have different assumptions about causes for difficulties in human relations, but if that planet has an established tradition of sending its children out into the universe---to 'make others happy'---then a minimum of preparation and awareness should be expected.
Other than that, I welcome the intention to show the dark sides of human nature but the way the story brings them about, and explains the real motives, passes dangerously close by caricature and farce.
The great positive about this anime so far has been the intention to show its audience how someone alien to the hardships that children and adults experience in social settings gradually comes to understand the unfiltered reality of such environments.
Anime in general though---whether the completely fantastical worlds (as seen in iyashikei/healing anime) where everything is just cute and wholesome, or the grim psychological counterparts---rarely strays from the reality of human nature, but takes it as a base on which it paints the brightest and darkest colors of the spectrum.