I haven't played it for long, and I might try again because it leaves a weird taste to leave a review having played so little of the game.
Let's get the first thing out of the way, saddly, not all Dieselmine circle games are good, this one is probably on the lower end.
Let's start with the story, it seems decent, at least the plot itself is fine, it's nothing crazy but it does the job of laying down the settings, beside that, I can't say much more, SakuraGames translation are pretty much MTL, you will probably get the meaning of things, but it reads really bad, and sometimes you just wont get anything, you would think after so many translation we would finally at least get a checker, to at least fix the obvious mistakes and word choices (hotel for inn, really ?)
So yeah, don't expect a good story since you will barely be able to understand it to begin with.
Now the gameplay, it's... bad, let's face it, I don't mind classic turn by turn gameplay, but this is just straight up bad, using or not a spell doesn't feel any different, beside buffing yourself spell feels like a waste of time as long as you don't build for it, since you do the same damage as if you just did a normal attack, which doesn't cost any mana.
The balance is all over the place too, just at the beginning, the first forest with the red orc, if you just explore a bit and reach the boss, you would be around level 8 - 10, which, you would think is fine, since you started the area at level 3.
Wrong, the boss 2 shot you, so except if you manage to oneshot him, you lose, and you have to go grind, this is what we call poor balacing, I don't mind a bit of grind if there's a good reason, but leveling up 6 times in a single, pretty small area, not being anough for the boss of said area, is poor balancing.
There's also a million spell, I assume there's weakness in the game, considering there is different element, but I haven't gone far enough for that.
To be fair, if this game had a decent translation, I would probably try to push further and go over the blatant flaws of the gameplay (I know we're playing a porn game, but if I only wanted hentai I would go read on nhentai or something, not play a game).
I also wont judge the H content, while I like the art, I can't really judge scene with just pictures, considering how bad the translation is it doesn't give me any enjoyement, if I wanted my H to be just picture, I would just go in an image gallery.
I know it can seem kind of rant-ish, which it is, but it's just that I felt like no one really pointed out how bad those 2 particular aspect (gameplay and translation) are (or seem for the gameplay, to be fair I don't consider having gone far enough to fully judge, but what I played seemed enough to give me an idea)
If you don't mind reading broken english, which reads really bad but at least you will get the gist of things, then give it a try, you might enjoy it.