Overall, this game sort of sucks. There's not a lot of monsters to defeat (usually, most dungeons only have exactly one monster, with the exact same number of monsters per group), and spell animations are frickin' LOOOOONG. You can't skip text either, which is also frickin' annoying as some 'boss' fights occur after a medium to long 'cutscene'. Like the final boss, who comes with a shit ton of minions that can bring your characters to climax quickly (which will drain all their MP). The boss herself can inflict a lot of status effects, so if your hard hitters get stunned or confused before you can take a turn, you might as well restart--it's faster that way.
(Sure, you probably can survive and win with enough grinding, but using items to recover MP and reduce arousal while weathering attacks with half your team disabled will take longer to get back to even ground compared to just restarting the fight.)
You don't have a lot of variety in skills, and the main character(your primary damage dealer) gets like, three single-target spells before she even gets one AoE. Also, buff skills are bugged -- they always 'miss' for some reason. At least it works both ways, so if a boss uses a buff, it's one free turn you get to whack him.
Also, fuck the lack of guidance in this game (this is coming from someone who can read Moonrunes). Three out of four of the starting quests are a pain to complete (unless you like being defeated again and again while scrolling through the same damn text, even if you skip the H-scene) unless you make a beeline for Elfriede (your elf companion). Or spam arousal-reducing pots between fights, assuming you can make it out of a fight without climaxing (and if Kuro climaxes, you might as well go back to the inn, since spamming MP pots isn't cost-effective early game).
Fuck the CG recollection room, really. You're given access to it at the beginning of the game, but none of the CGs are unlocked during most of the game, despite it telling you that you can review CGs after experiencing them once, or completing the relevant quest. (Okay it doesn't outright tell you but the implication is clear, "If you complete the quests given to you by the receptionist girl earlier, you can watch H-scenes. Scenes that you've viewed once will be converted into data, allowing you to watch them again here.")
The CGs are actually unlocked right before you fight the final boss (you can return to town to view them if you want, or do so in New Game+). Fuck, why doesn't the game lock the CG room until then? Or at least not mislead us earlier.
Fuck the Rare Item Collection quest, really, since you'll have to revisit previous dungeons and explore the whole damn thing again to find the items which are placed in shiny chests which aren't there before. And that's not even going into how it's bugged (to the point of breaking the whole game) before v1.02.
The plot is also somewhat incoherent. Elf Girl suddenly betrays and kills you due to PTSD, unless you have the foresight to complete unrelated quests so someone could give you poison to throw at her. I mean, really, OOC much? Thought she was a raging lesbian for the protag earlier.
Then suddenly you need to go to t̶h̶e̶ ̶M̶i̶d̶d̶l̶e̶ ̶E̶a̶s̶t̶ a desert town to fetch some oil to run woodcutting/construction machines to rebuild the town. Helloooo, I thought this was the usual medieval fantasy setting? And I don't see any of those machines before (or even after I fetched the oil), with no allusions being made whatsoever before the coin was dropped.
Afterwards you'll need to defeat the succubi to avenge the village, but the game doesn't tell you how. So how? Well, take a long detour through the desert village, a fucking floating continent (which for some reason, is infested with orcs), and some desolate snowy village in the middle of the mountains. I think the game is just throwing random biomes at me for the same of throwing random biomes, instead of having any in-game justification whatsoever.
Speaking about Elf Girl, fuck. She gets temporarily removed from the party when she goes yandere, and when she comes back, her level is fixed at Level 14 (which is probably less than what you had her at earlier), and she loses. all. stat. buffs. you. gave. to her. earlier. Yannow, the rare candy-esque, rare items that are only available in limited supply from one-time boss drops and title rewards, plus the occasional chest loot. Unless you had the foresight to farm them earlier from the bandits, which drop them for some strange reason (and become 'lost forever' after you complete the relevant quest, which you need to proceed). Fuck, really.
At least Elf Girl gives you back her equipment before she leaves, so you don't lose them, but that's not too much of a consolation.
Moral of the story, don't give any stat buffs to Elf Girl until she leaves and return.
There's a touching scene at the end of the story, but it comes out of the left-field and leaves you with a cheap death of an NPC. Sort of like Kisaragi's death in EP 3 of Kancolle, really (minus the obvious death flags). Said scene is also missable.
At least the CG are somewhat nice and cover a broad variety of fetishes. There are plenty of scenes as well. They aren't exactly top notch, however A lot of scenes has anatomically-incorrect toes and fingers, and in a small minority of cases the coloring is done sloppily with colors leaking across lines. Okay, maybe I'm a bit picky here, and I'm probably spoiled by Pixiv and Danbooru, but still.
File size is too big for the amount of content. No voices (apart from some poorly-sampled screams which sound like a hyena being caught in a bear trap) or a lot of CG variation either (either of these tend to be the main cause of bloated game sizes). Instead most of the game size seem to come from unused RPGmaker assets, so I suspect the author is deliberately padding the game to make it look better.
TL;DR: Not worth playing. Just view the CGs if you want. Might be better in the future, since the author promised additional content, but i won't be hoping much.