My experience with this anime that is... ALLEGEDLY a VN adaptation can be summarized in one word: "...what?"
At least once, I found myself going back to the info page to make sure this was indeed the VN adaptation I was following this season, because it suffers from an issue I've never seen before in a VN adaptation (and I've seen plenty of subpar VN anime): every week, it felt like they were making it up as they went along. I'm not sure who's at fault for this, actually; whether the anime team didn't do a proper job explaining everything or the VN itself didn't do that, but either way, I, the viewer, was left scratching my head.
The cause of all this confusion is that most ill-defined and whatever-they-want-it-to-be of plot devices, time travel. I recall something in the earlier episodes about one of the leads thinking they were from the past or something and one thinking they were from the future, then some side characters (who ultimately proved to be irrelevant) were given arcs lasting a couple episodes each, some of whom were convinced they were or had to become time travelers themselves, then they took away the protagonist's memory a second time or something and had him time travel again and suddenly the setting was totally different for just two episodes, and then the final episode with its final twists that feel like they thought them up in the week beforehand got even more ridiculous and I've given up trying to follow the order of events.
I was so clocked out trying to follow the plot, I had actually dropped it by episode 11. At the time, I was thinking the plot still made so little sense that they'd be making something like 16 total episodes to properly resolve everything in a way that made sense. It wasn't until I found out it suddenly ended at just 12 that I decided to watch that final episode. That final episode, I can summarize the same way I'd summarize this whole series: while it kind of has good character moments, I'm too busy not understanding what's going on to feel anything.