Game should be enjoyable for most, posting a review as the game was so close to being a classic.
Firstly the actual gameplay, the world is set inside of a virtual MMORPG in which your consciousness is transferred to the game while you play. The gameplay is enjoyable with a wide range of unique art monsters to fight and kill, the fights have some level of tacticability to them when entering a new area, you have to use your spells & abilities properly even on normal difficulty, and on hard even more so, using things to "Trip" your enemies, or keep them stun locked as you knock down the adds, DOTs are useful and stack for huge damage which adds another level.
The world itself has a lot to do in the boss monsters placed in each zone and the numerous items weapons, armor that can be collected, the team has certainly played enough MMOs that they have recreated a proper 'solo-mmo' experience, evident in the main town itself in the dozens of NPCs they placed around which was nice, many games fall short of this and fail to recreate proper towns, and although theres only one in this game, they made it wonderfully with great day cycles and ambient lightning that makes the town enjoyable place to be in.
Art wise even though its censored each of the CGs are unique and well worth seeing, HOWEVER they come with criticism which is addressed in the following.
The story is where it falls short, the characters themselves are unique personality and appearance wise, and its great seeing each of them further in NG+. HOWEVER the game falls short in its core gameplay mechanic which is the MC can turn himself into numerous different monsters, BUT in H-art is only represented by a slime or regular human. Even if you pick orc/cyclops which are huge monsters (And they have heavy walking footsteps which was a nice touch) These are never represented in any CG, it will still be a regular human without even a tint of skin shade or anything. Conversely the slime does have different colors but this is just the same base CG with a different color based on which slime you are. This is less of the artists fault and more the game design / managers, as the artists would have been instructed to make completely humanoid art.
Additionally in NG+ there is the option of NTR but it's really weak and may as well have not been in the game at all, the CGs look great but it seems like it was shoe horned in rather then actually thought about, and falls short for anyone that likes NTR, and will clearly just piss off the people that don't, so its a LOSE LOSE situation.
Another on the concepts, the MC has the ability to change his body like said before, but this is only used (TWICE) out of the many CG, once in the first run, and once in the NG+ run (in the NTR scene) which was great but falls short for the former reasons, which falls to the story writers fault for not going further with it. If you're going to add NTR then do it properly or it'll just anger both the people who like it and those that don't.
I hope the studio makes another game of the sort and fleshes out their ideas, as this game was really close to being a 10/10, and I'm sure many that played it would feel this way too that just a FEW little things and itd be a h-game masterpiece.