- Going back in time to change the future.
- Going back in time and altering the past, thus creating a parallel possible future.
- Going back in time to ensure that certain past events occur, because everything is seamlessly connected.
Yomeiro Choice uses a bastardized version of all three, to form it's inconsistent plot. But in the end none of that really matters, because why complain about the usage of science theorems, in a mediocre harem, ecchi, rom/com.
And just like in any harem, there has to be a protagonist and it comes in the form of (the generic male protagonist #517) Saku Sakuraga. He lives alone, like all Japanese boys supposedly do, but is never given a moment's piece, thanks to his childhood friend's constant meddling and his cousin's sudden arrival. Yet if that wasn't enough on his plate, an odd little girl appears outs of nowhere; claiming to be his daughter from the future, who's travelled back in time to ensure her Dad will procreate her... and she isn't the only one. Well that's it for the basic premise and like I said earlier, the time travel aspect merely plays second fiddle, making this into yet another implausible story where some hapless guy has to pick between multiple girls. However the reasoning behind it all is kind of farfetched. As for the structure of the story, it's exactly what you'd expect, with each chapter having a theme or character focus, to provide opportunities for some comic relief but never really doing much to advance the plot. The comedy and ecchi mostly come from the numerous times the daughters forcefully try to get involved, bringing their future tech into their shenanigans, but it's nothing more than a bunch of uncreative jokes that got old in the days of Love Hina & Tenchi Muyo.
Another thing that got old was the art style. To the mangaka: So what if you can draw cute girls in ecchi (borderline hentai) situations. It doesn't mean anything if little-to-no effort is put into providing a unique look and feel to those cute girls in their ecchi situations. In the end the art of the manga was boring, because it offered nothing new and looked really simplistic.
The characters themselves are simplistic. Heck, they are basically just cardboard cut-outs of what we are all used to by now. Nothing more to their personalities than the one-word captions used to think them up (i.e. Kuran=Tits, Karin=Tsundere, Mebuki, Kiiro & Hiiro=Lolis, Saku=Meh...) So yeah, there's nothing to the characters, but if you enjoy your characters simplistic, then you'll have a variety of them to choose from. Nevertheless they seem to lack any depth that'll make you care about them and by the time the mangaka tries to give them depth, it already feels like it's too late.
I remember that one episode of Futurama when Fry met his accident-prone Grandfather, in the past and takes it upon himself to ensure that his Grandparents hook up. But it was his involvement that killed his Granddad and in the end he became his own Grandfather. It's this kind of messed up feel that Yomeiro Choice has, but unfortunately it's no way near as entertaining. Certainly this manga does have some genuinely funny moments, but they really don't happen often enough, to fully redeem its shamelessness. If it wasn't for the time travel hook I really wouldn't care about it that much, but it can still be written off as just another generic harem, ecchi, rom/com; where some bland teenage boy ends up living with a bunch of easily attainable girls, with a whole bunch of jokes cropping up in-between. I mean sure, if that's all you're looking for then this little title could very well satisfy your need, but that's only if you don't mind: the badly put together story, some poorly executed jokes, a spoilt loser of a protagonist and heaps of non-consensual sexual activities (oh wait, if it looks like she's enjoying it then I guess it's OK).
