Welp, I ended up picking this out of my back-log. Why? I dunno. Just felt like it. In any case, I skipped this dev's second game (for now, maybe I'll pick it up some other time), partly because their first game was... not particularly amazing. This one isn't either tbh.
To start with, I'll say that the main things that are good about this game is the huge tiddies (if you like the art-style) and the usage of hypnosis which doesn't degenerate into instantly all-powerful mind-control right away the way it happens in other games where hypnosis is used. The build it up still fast and lazy in a number of ways, but the increases to the hypnosis levels are better handled than other examples I could name. The demon-girl applying it has to literally torture the two into Level 3 for example, and it's implied that it takes quite a while before they give in. Sadly, the build-up is purely linked to the hypnosis level and no other events whatsoever, so the system could be a lot better... but alas, that's not the case.
The story for this game isn't terrible either. On the surface, it seems like it's your typical "cultist of the demon-king tries to unseal said demon-king and out unfortunate protagonists get caught up in it and subjected to lewdness" story, but it actually does have some fun twists to it that spice things up a bit. The fact that the one trying to mess with Daemon's seal was the Hero's lover who wanted to resurrect the Hero and have him become immortal with her and all that jazz was a nice twist. So was Amunyu's role in the whole thing as both the last surviving daughter of Daemon and one of the girls that loved the Hero but didn't get to have a relationship with him because of Anjera/Angela/whatever-the-fuck-her-name-is.
The main issue with the story is that the ending split (there's only 2 endings, the Good Ending and the Bad Ending), hinges only on the hypnosis level and nothing else. Have Hypnosis level 0? You get the Good Ending. Have it increased at all? You get the Bad Ending. The problem with this is that the split to the ending, narratively, depends entirely on Amunyu's choice in terms of how to handle the girls based on how much she remembers from the time with the Hero thousands of years ago. The problem with that is that narratively, this isn't set-up properly and there's no real logical reason why things go one way or another. It's not the worst ending split I've ever seen, but it's honestly not great by any particular metric and could have been worked on better. Particularly in terms of gameplay...
Beyond that, I'll comment on the NTR for this game. Quite frankly, as far as I'm concerned, there isn't any. The thing is that all the H-stuff happens because of hypnosis and ONLY because of hypnosis. The girls never betray Al, their lover. Not because they feel good, not because they can't help themselves, not willingly, not reluctantly, not at all. Hell, the bad-ending has one particular scene where their consciousness is restored (but everything else isn't) and both girls only want to escape and kill the guy that's essentially raping them. Al himself is only unable to save the girls because Amunyu is the queen bitch of hypnosis and left him completely helpless while still being aware enough of the twisted common sense of the world to suffer. The funny (and fucked up) thing about it all is that the Bad Ending is actually Bad for Amunyu too, who's left unhappy and unsatisfied even as she fucks up the whole world and basically inflicts her pain on it all over the fact that she was never able to confess to the Hero and all that jazz. She especially takes it out on Al, who is the Hero's descendant.
Basically, I wouldn't really recommend this game for hard NTR fetishists, or even corruption fetishists. It's really a hypnosis focused game and for that crowd, I can indeed recommend that game. Well, that and huge tiddy lovers who don't care overly much about the how and why of the girls' circumstances while getting fucked.
Moving on, there's nothing good to say about the mechanics of the game. It's very lazy RPGM stuff. The fighting and dungeon exploration is basically a tedious chore that you'd be better off without. The fact that the Hypnosis level increases are primarily tied to losing to monsters that you have no real chance of losing too is annoying. The gear is almost non-existent. The consumables are primarily pointless... So on and so forth. The game is really utter slop in that aspect, and might have been better as a VN of some kind. It's one of those games where you genuinely don't lose out on that much if you just unlock the gallery and watch the scenes there...
The context of the H-stuff just isn't that complex.
Said H-stuff is, for the most part, fairly typical hypnosis stuff. With the girls doing increasingly absurd things thinking that it's "normal", when it's really not. The game's re-usage of CGs isn't too bad, but it does happen, particularly in the Bad-End section, where a good number of events re-use the same CGs as the Hypnosis lvl 3 events, though they DO add a pregnancy variant. Oh, that pregnancy stat tracker? Only relevant during the Bad-End sequence, and there's not that much to it. If you were hoping for a proper pregnancy system in the overall game? Tough shit, there isn't any.
Lastly, the translation. The translation is good, but it has more spelling mistakes and whatnot than I think is typical for Daedroth... but based on his post, it seems to me like he lost steam with this game and wasn't particularly motivated to go over it with a fine toothed comb to fix all the small typos and whatnot. I can understand it tbh, the game isn't great and its replay-ability is basically zero. Maybe someone else could do an editing pass to fix that stuff up, but I honestly don't think it matters that much. The game just isn't worth major effort as far as I'm concerned, though I imagine hypnosis fetishists would disagree, since tbh, the pickings for that particular genre are pretty slim overall.
All in all, the game isn't a terrible time-waster and source of material, if you get what I'm saying. You'll get some faps/schlicks out of it, but it's not particularly amazing or memorable... or particularly worth revisiting. For me at least, there's better devs to spend money on.