Good game so far. I really feel like you've improved your renders compared to Legacy (which is a game I really fucking liked). The issue with Legacy was sometimes the characters kinda seemed really weird looking and uncanny - especially Kenji. In Timelapse, the renders are consistent and the sex scenes look hot and never look weird. I went into Timelapse expecting it to be text-based, so I was surprised by the use of a GUI. To be honest, I think I prefer text-based over GUI for your games, but regardless I think the GUI works well. I guess you decided that the ADRIFT engine was too old or just wasn't enough to suit your needs for Timelapse? I also guess it speeds up development because with a text-based game, people are expecting to be able to inspect a speck of dust that is lying in the second drawer of a cupboard behind a bookcase, and other intricacies that only serve as writing fodder and will not be seen by many people. With a GUI, you can just have one or two things to examine on-screen and be done with it.
I'd be lying if I said I wasn't playing this game for the NTR. I really enjoyed the NTR in Legacy, the way Hiroshi slowly corrupts the maids, and the way you can eventually walk in on them talking to or kissing Hiroshi instead of doing their duties, was top-notch. There were just a few things in the NTR-compartment that really felt lacking, namely stuff like more scenes with Hiroshi after the maids fall for him, more of those potion scenes, being able to talk to the maids about Hiroshi, and other things that add to the NTR experience. I guess for Legacy it was your first attempt at NTR, so I commend you for doing a great job regardless. I also get it that Pervert Action is a Harem game first-and-foremost, and any other fetish comes second. In short, the NTR that exists in Legacy was really good, but it left an itch that wasn't quite fully scratched, if you catch my drift.
With Timelapse (at least, in THIS version), I can already see you're trying to expand the NTR as previously mentioned. Shuji gets texts and images sent from Hirai after dates, the girls eventually react neutrally/positively to going on dates with Hirai, Shuji can ask the girls what they think of Hirai, Hirai literally calls you a cuck to your face in front of one of the girls (fuck yes), and there are sex scenes between Hirai, the girl, and Shuji (except for Shizu). Still, I feel like there is more you can add to the NTR dynamic of this game. I am already aware that you plan on adding more to happen with Hirai.
Things with threesomes between Hirai and two girls, more sex scenes of Hirai and a certain girl, Hirai having sex with girls outside the trio (like Miku), etc., would really cement this as a great NTR game, despite it being a harem game. Of course, you choose what to do with your own game, these are merely suggestions. I'm afraid that my suggestions may prove to be too much workload anyways, and would turn a harem-focused game into an NTR-focused game.
Regardless, the harem side of the game is fun as fuck as well. I actually like all the characters this time around. In Legacy, I thought Kimiko was hot both in terms of appearance and personality, but I didn't really care at all about Fumi and her twin, I think those characters weren't so great (but the pegging was nice lol). Good luck with the game dude, I'm excited for the next releases.
P.S. Emi is the hottest.