Well, this was a fairly ok game. Gotta give it points for the quality of the art and the animations. Also gotta give it points for avoiding most of the usual NTR cliches that pop up. MC doesn't have a tiny dick, doesn't stay a weakling forever and can get plenty of action with the knight slut with actual progression to the H-scenes and everything and not just and ending. Additionally, I think the lust crest is a good thing. It gives a genuine good reason why a normally strong woman would easily fall to cock, rather than the usual trope of "is dumb as a brick and has a sex drive that's over 9000 and somehow hasn't noticed this fact until now".
What's weak about it is the fact that it's both way too easy to cock-block the guys that are after the girl and the fact that if you're proactive about it, they all also give up way too easily. Now, sure, you could say "just don't activate those tracking skills fam". You could do that, yes, but there's not much incentive to that, because then you might miss the sexy times too, so it's a fucked if you do, fucked if you don't sort of thing. On top of that, even if you 'want to play IC' wit the protagonist, or self-insert, the fact that a bunch of guys are after her becomes painfully obvious really quick and you can easily find out about the crest by catching her masturbating. Given those details, it's perfectly reasonable that the protagonist might spec into some tracking magic to keep an eye on his vulnerable childhood friend.
I have to detract points for some of the endings though, if only because they don't make any sense. Why does the MC go on to become the grandson's servant with the girl when he was training to be a soldier and successfully graduated? Why does Locke even care about the MC enough to call him over to see Atelle get fucked, when up until that moment, he pretty much paid zero attention to anything the MC was going?
In general, because there's a whole bunch of guys involved, each of their story-lines feel rushed, even with the crest helping to explain what's going on. The real problem is that Atelle's reactions to various circumstances aren't really detailed enough. Like for example, when Locke uses his hypnosis skills to finger her in front of the class, she has no special reactions to the fact that MC is attending said class, which you'd think she should, regardless of whether they're dating or not at the time. Especially if she has a maxed out affection score. MC not having any reactions to watching Atelle get fucked by various guys is also weird. It's especially jarring for the first maid toy training scene, where the text explicitly says that MC found her with toys in and on her, and even has the option to turn up the intensity of the toys or turning them off, before leaving, but somehow, there's no option to speak with her or anything.
I don't know if the dev wanted to leave more room for players to self-insert or what? It just feels weird.
In any case, the game's pretty decent. I'd say it's definitely superior to Scars of Summer in every way (especially since the MC can actually get together with the girl). However, for me at least, it's vastly inferior to Nebel. The progression of the corruption in that one feel much better, and stopping the antagonist does actually require a bit of effort with the day parts and all that. Not to mention that getting the actual good ending, especially on the 1st play-through, can actually be pretty hard if you don't think things through and plan things out.
I was able to get the good ending on my 1st playthrough without much effort, with the full skill tree unlocked and a decent amount of money in the bank to boot. It wasn't hard at all. The game telegraphs things pretty hard and rushing the stamina skills after the location skills is a no-brainer... You don't even need stamina pots after that, simply because you don't have enough time in a day to use more than the max with how the time-slots work. Did a second playthrough to see the grandson's stuff too, not particularly impressed, though I'll give him points for his tastes in maid stuff.
After that, just got the full save to unlock everything. Dunno if I'll do any more playthroughs to experiment with stuff.
I've noted two things though:
1. The thing with Atelle disappearing, sometimes for entire days, if you remove the hypnosis book, is definitely still happening. I got the 1.02 version from the OP and used the 1.04 patch on it directly.
2. Is the adultery ending bugged? I'm not sure if something's off because of the full save... but on my end, it gets stuck when MC is talking to that knight captain. They talk about finishing work early, and regardless of which option you pick, it just loops the dialogue over and over and doesn't go anywhere. I assume it's supposed to allow the MC to go home and find Atelle getting fucked by someone else?