Well, I ended up spending a lot more time with this game than I expected... which is actually saying something since NTR is pretty meh to me as either a fetish or a genre or however you like to label it as. The art, the story and the complexity of the game system carry the game quite a bit in all honesty. It's not perfect, far from it in some cases, but it has quite a few good gems in it.
The True Ending was absolutely hilarious! Seriously. I did not expect that. The game might be worth playing to some just for that. The other endings are all interesting in their own way. Props for the porn seller ending, that one I'd say is especially creative.
The combat system is also very interesting, but clearly rushed. A lot of skills simply don't have any real use... and nothing beats the Ice+Fire combo that helps you bombard things with Spiritual Release for three turns straight... not that most things will live that long... and not that it's easy to live that long in the first place against anything that can tank that much damage. It's neat that the skills gain levels as you use them, but it's not clear what those levels do outside of reducing Mana Costs for some of the MC's Mana skills and reducing resource costs for Kana's skills. It's also annoying that you don't have a list of what all the buffs/debuffs do, which makes it impossible to properly strategize around them.
Not that it's needed or possible much. The complete lack of in-battle healing (at least, I have not found any options for in-battle healing) means that you pretty much have finish all fights in as few turns as possible or else you're screwed.
Honestly, I think the combat system has a lot of potential, but it doesn't quite reach it.
As for the NTR. So-so, as usual. On the one hand, I'll give the dev props for allowing a selection of the MC's dick-size... but they didn't take things all the way properly. The MC has no options to improve his sex-skills or sexual stamina, no options to confront either Kana or Lawrence about what he may or may not notice. No options to do anything direct in general, really. Oh and of course, his cum amount is basically non-existent. As such, the NTR falls in the typical pitfall of nice but overall pathetic guy vs sex-god-big-dick-bastard-whatever. He's entirely passive and either wins by cutting L's time short, or because Hotaru essentially does what he should have and scares the fuck out of blondie, or loses because he can't grow some balls and actually do something about his girl being messed with.
Basically, the usual issue with NTR, where it's hard to believe that such a spineless human being could exist, especially when outside of this specific issue, they're perfectly normal, and even brave and capable enough to fight friggin' murderous ghosts. At least Kana's reasons for keeping quiet are a bit more serious than usual, and actually make sense. Props to that compared to some to usual NTR motivations out there. Her being the heir of the family that caused the disaster could lead to a lot of trouble for sure. She had good reason to be afraid of that getting out. Especially in the town affected by said disaster. Hell, if the locals decided to sacrifice her to the ghost, it might have actually worked, given the one bad-ending where Hotaru possesses Kana.