You'll have to abandon a lot of plot logic to be able to enjoy it, as similarly to NagiAsu, any logic in worldbuilding is completely subject to whims of the plot. Plot which unfortunately has both pretty bad writing, as well as pretty bad stereotypes. And not bad stereotypes in the ''tsundere'' sense, nah, those aren't bad or good, those are just tropes at this point. I'm talking bad cultural stereotypes. While it might be in line with j romance culture and otaku romance mentality, it doesn't make it any less unhealthy as a perpetuating norm. More specifically, the scenes in first half where Michiru is sticking her nose into other people's romance business like it's her sacred duty to make sure nobody dares think of anyone else in a romantic sense as that would be lewd and inappropriate. It's not the act itself that's really bad, it's how she perceives it as a social norm and story doesn't go on to deal with it in any way. An unhealthy norm to propagate, since it only staggers the potential real life romances by not inspiring the viewers to be honest with themselves and others.
Right, enough of that.
This is hardly the most important reason for why writing here has issues. It's mostly the first half of the show, nearly all the little one off episodes with their mini stories that revolve around clients. They should be there to provide context for our main characters interactions, not to make us cry every single episode. Expecting the viewers to cry at your cue for every little thing like that, for characters they only just met, both fails to work and leaves a sour aftertaste. So instead of sad and dramatic, it comes off as incredibly cheap and melodramatic. I almost wanted to drop the show at that point, but I didn't since those little side stories obviously aren't the actual point of the show, but just badly handled fillers and exposition.
In case of Plastic Memories, it all depended on how last third would be handled, will it be as shitty as writing demonstrated so far, or will they actually pull it off well in some way? I was 50/50 about what to expect. Show up to that point has shown a lot of very good micro-writing, well executed gags and pretty much every slice of life scene was on point. And there's something to be said about making slice of life scenes not boring. If you can pull that off, you kinda know what you're doing, as a studio. Luckily, they didn't opt for melodrama in the end, but went for the low hanging fruit of playing it straight. So while the story is nothing new, nothing unexpected, nothing special in any way, and rather predictable, writing felt well handled in the last third of the show, and together with top of the line direction and production, delivered on what pretty much everyone expected and was here for.
So I'd say PlaMemo succeeds at what it sets out to do, hence the favorable rating. I personally enjoyed it (once it stopped with the fillers) since this is what I was here for as well: non boring moe romance with great production and some feels on top, that also isn't braindead but also has couple of things to say about life, which even though generic, are quite resonant and well executed, leaving an overall good impression.
