Thank you for sharing this, I learned a lot while writing this review and found many places I could smoothen over in my own work. I hope this will help you too.
-The cover/banner: I really like the cover! The banner is good too! I'll use this to talk about the description a bit.
An outbreak of strange curses and a kingdom in chaos...
Leaves Lunette's young, cheerful, and sometimes ridiculous Prince Cricket one choice.
The dots and spacings make this awkward to read.
Along the way, they meet a dashing if not rigid young hero named Yoshi
This line really stands out. Your description shouldn't explain what the characters are like. The same is done with Prince Cricket which too is unnatural, but Yoshi's really stands out since it starts on a different line.
The last paragraph of the description is the only one that really tells us anything about the story and that too is pretty vague. Your description needs to be much more crisp and attractive. Here is an article that really helped me write my own description. It might be helpful to you too?
Summary
-How hooking the prologue is: Alright...
The tricky thing about stories is this, they all have to start somewhere. For some it is with "once upon a time", others with "it was the best of times".
This story begins thus...
I don't think this is a good choice. Don't mean to be rude at all, but it seems like this story is saying "I'm not like the other kids" which is a red flag in my opinion.
The content of the prologue is good. It's interesting. There is more stuff but I will come to that later.
-Impressions on the first few chapters and whether they make me want to keep reading: I think the content is good, the story seems to be moving to an interesting place.
-Style, tone, and setting: Style... You certainly have a unique style. I can see why you use third person and while it is a different method to tell a story, I think you might be abusing it.
Let's start
In a kingdom along the shore of the ocean Selene (named so for the great goddess of the moon who cried the ocean into being when her beloved Endymion was lost) there was a young king called Jaxith
Why add that extra commentary in brackets? I can understand once or twice, but as a reader, seeing this many times does nothing except tear me away from the story. It makes it impossible to get immersed in the story.
Moving on in the prologue.
Summary
But as with many good things, this too had to come to an end. And as with all good stories, this one, too, is fraught with sadness.
And this.
Nearly eighteen years later finds the young prince Cricket much grown, but no less jovial, and mischievous for it. His midnight hair is long, sweeping well past his back, trailing stardust in his wake. His smile...is just the same, though not quite as gummy anymore.
And at a few more places, these sentences are simply telling the reader what is happening. You have to show it. Show, don't tell.
Another problem I can point out is grammar. Tiny issues are alright, but I rarely see commas. At some places, tenses are pretty messy and the sentences read awkward at some places.
If you don't already, I highly suggest using Grammarly or some other text editor and checking out some books on grammar, they will surely help a lot.
One more thing I have to say is, I know nothing about your fantasy world. Your balance in conversations and actions is on point, but there are barely any descriptions on what the world looks like. How are the streets? How are the shops? What kind of design do the shops have? They eat mochi but mostly use spoons, so what is the setting like? This stuff needs to be shown in your writing otherwise people won't get interested in your lore at all. No matter how good the characters are or how strong your plot is, if I don't know where they are or where the plot is progressing then I won't be able to connect to it.
Overall. I really enjoyed reading it and am really looking forward to where you take this, but a few rounds of editing is certainly necessary in my opinion.
If you find my phrasing rude at any point, I sincerely apologise. It is not my intention to be offensive at all. Again. thanks for sharing, I learned a lot for myself as well.