It is a reasonably good game.
Unique in a way that pampers to a specific audience, but judging by that standpoint, it is well-made.
The CG is decent, not the best resolution one could ask for but reasonably detailed, creative and unique.
The gameplay aspect is very similar. Wrapped in a standard RPGM format and albeit somewhat lacking in functional variety, it's utilizing interesting mechanics and it's tied directly to the story.
Now the story -the writing is not that good. It's no Hemingway. Some things just don't make sense and many characters, and its fantasy world, just aren't fleshed out.
Still more than sufficient for a game of its kind, however.
So far so good,
so why 2/5 "poor"?
Two reasons.:
1) The game's Japanese and, presuming you can read it, you might find much joy. But this version here is a translated, English version. Translation, however, wasn't done by professionals and it shows. It's mostly fine though, enjoyable, but there are some google-translate lines that make no sense and whole dialogues remain untranslated still. As you can imagine, if you're in any way invested in the characters or the story, suddenly not understanding a word is not exactly fun.
2) In version 1.0.6 (the version you can download here), there are scenes which result in an immediate crash of the game due to an unresolved audio error, which comes with a loss of progress and locks players out content.
Supposedly 1.0.4 does not have this particular bug, so if you want to try the game, you should probably try to find that version instead of this.
However I can't confirm it's true.
These two problems can be quite frustrating, which is why I can't bring myself to give it a 4/5 I think it'd otherwise deserve.
I can't recommend playing this one with good conscience exactly because it's good, and then the problems surface and it's just disheartening to the point you might be better off not having played it at all.
However if you can read Japanese, find that version go nuts with it.