This is a spoiler-free review.
This is a type of game that seems to have people that either really like it or just straight-up hate it. There's also a lot of curious people that want to know if the game is worth getting, so rather than just tell you "Oh yeah, I like this!" I'm going to list all of the various things a person may like or dislike about the game.
First of all, this is NOT a visual novel. This is a simulation game mixed with RPG elements. A visual novel is a game in which you only point and click to get story to continue. This is NOT that kind of game. It becomes a simulation game when there are stats to alter and daily choices to be made. It infuriates me that so many people called this a visual novel, when it's obviously a simulation game. Since you can go into a turn-based battle with HP & MP, level up, use a sword or magic, that's the part that's RPG-like. Although, I definitely wouldn't call this an RPG, since the battling is definitely not the focus of the game. In fact, you don't have to step foot in a battle if you don't want to. You can progress the story without participating in battle.
Is this a dating sim? I believe so. I've seen others argue that it isn't, but I would say *it is* mainly because the only good endings you can get require you to have a good romantic relationship with a girl. There are only two girls to choose from, by the way.
How's the storyline? The best word I'd give the storyline is that it's rather odd. This isn't to say that it's a bad storyline, but in all honesty, I find the plot to be a bit weird. I've only gotten 4 endings out of the possible 10, so the storyline could be explained more if I get more endings, but they don't seem to explain the "weirdness" of the storyline very well. For some people, this isn't a problem though.
Otherwise, the story involves getting to know one of (or both) of the girls that the main character knows. There are also two optional characters one can interact with, but they're strictly platonic.
The main goal of the story is to save Claire. Yes, Claire is one of the two girls you can be romantically involved with, but you must save her regardless of which girl you choose, otherwise you'll get a bad ending. Save her from what? That would be giving away spoilers.
How are the battles? Too easy, honestly. All one has to do is learn enough spells, and a person can very, very easily survive battles without much effort. In fact, you could learn ALL of the spells before even entering into your first battle, and you're pretty much guaranteed to win. As I mentioned earlier, there's HP, MP, basic attack (with a sword), and magic. It is turn-based, like any old-fashioned JRPG. There are times while in battle that certain mechanics of it don't make sense. For instance, if an enemy casts a shield on itself, it also casts a shield on the main character. I think this was a mistake in the game design, not intentional.
How long does one playthrough take? It's really only the first playthrough that should take a while. My first playthrough took about 5 or 6 hours. Of course, I read all of the dialogue. If you were to skip the dialogue, it would probably only take you an hour or two. If you're a fan of story (which I'm not sure why you wouldn't be if you're playing a game that's heavily focused on story), it's only long the first playthrough, because after that, you can skip any *already read* dialogue. There's also the option to skip all dialogue regardless of whether you've read it or not, but that seems like a rather silly thing to do.
Are there walkthroughs for this game? Yes, but the only ones I've ever found were incomplete. I suggest doing a Google search to find various walkthroughs if you really want tips on how to get through the game. Some walkthroughs have given false information though, so be careful about which ones you choose to follow.
It's difficult to write a walkthrough for this game, because of the high randomization of events. Two different people playing the game could make the *exact* same choices, but end up experiencing events on different dates in the game. Basically, the games event mechanics are not set to specific dates. You, the gamer, have to trigger them yourself through either persistence or mere chance.
What do I mean by "persistence"? For example, the forest where your battles can take place has certain events within it. If you want those events to happen more quickly, then you need to keep exploring it over and over again until it triggers. However, if you're a patient person, you could just wait for it to happen by chance by exploring the forest every once in a while or something. Each time you explore the forest, the game randomly generates either a battle, a personal daydream of the main character's, or an event. Battles are the most frequent. Thus, you can have about a dozen battles before ever randomly getting an event or you could simply "luck out" and get an event straight off.
Is there any "ecchi" or nudity? Nope. Not even a little bit.
I think I've covered all the stuff most people ask/wonder about this game. I hope it helps the curious/unsure people about whether or not to get the game.