It's okay. Not great. Not terrible. Right at average.
The art's decent, and the character designs aren't bad. Only thing to knock truly is that demon dick is thrown in your face so damn often that it starts to get obnoxious.
Let's dive into why it's bland.
Okay, so. The combat's pretty trash. Like, really, really trash. It's made out to be turn based but you can stun lock demons and easily kill them, even later being able to insta-kill them. All in all, though, it makes for repetitive fights of doing the same moves on repeat. Eventually did encounter an enemy who was immune to your stun ability and ignores you shielding ability (which killed me, admittedly), but it was a long time before I encountered them. So the majority of the game is spent facing the same mooks who you can kill with ease, except it's time consuming because the fastest you can kill them is in 4 turns. But you can access your best energy restoration only in combat, so it's more like 5-6 usually. Repeat the same skill order ad nauseum. Plus there's extensive delays between turns, despite your enemies showing their moves through their postures), that's around 1-2 seconds.
The inclusion of an auto-battle mechanic would alleviate this immensely, or a better battle system with more important decisions. If the former is implemented, it would be best if you could script your moves or something similar, since the same skill order is always used.
Next up is the interactions between characters. It's incredibly lack luster, as you're often given the choice to either be extremely friendly or extremely arrogant, with no in-between. There's no room for the player to express themselves except with two extremes, while the protagonist acts either as an incredibly loquacious bore who only says compliments en masse or a massive cunt. It would be better if there were more dialogue options for the player, so that they can feel like they have more dynamic choices on their interactions with the characters. Also, the relationship mechanic in general needs to be re-done (it's either love or submission) so that the two have more inter-lap. It's been in my experience that there is none, they have no effect on the either in general, and that they both do the same thing in different ways, instead of achieving different results because of different methods.
Finally, game mechanics. Things like returning home empties your inventory. While useful to quickly deposit things and free up space, there's no option to keep items from being dumped. This is problematic for when you need certain items on hand to give to certain NPC's. Setting out while forgetting to grab them can be extremely annoying, especially when certain encounters where you need them are random. Another game mechanic is food. You must gather food at all times to feed everyone at home, at a rate of 2 food consumed per day (breakfast and dinner). You can get anywhere from 0-2 food per raided house, among other things. Whereas at first, this isn't that bad, but only because the encounters you experience are limited. As the game progresses you encounter more scenarios that over all give you absolutely nothing except to waste your time, i.e. combat with a roaming enemy or an encounter with an NPC you don't care about at the time. Furthermore, touching back on raiding for food, you often find other items of interest (alcohol, batteries, and chocolate). In my experience it averages around 1 food, and 2 of the mentioned items. So per house is around 3 items, while you only have inventory space for 10 things. You can dump things but it's generally not a requirement, but the issue I'd like to address is that somethings you find too much of one thing while others you can't hardly find at all. Giving the player options for what they "look for" would be best, i.e. "Search for Food, Search for Batteries, Wander Around", etc. That way the player can effectively deal with any needs they have, rather than praying to RNGesus every time they go out.
All in all, the game's pretty average. The plot I didn't touch on, because the whole point of the game is to get you fucking women, but also because it's pros and cons are pretty subjective. Also because this review is long enough as it is. With improvements I can definitely see this game being something you can fondly remember, but as it is now, it's really meh.