From RPG Game Maker Reviews:

Score: 86/100

Concept
Yu is about to marry Princess Hime. He’s supposed to meet her at the castle, but then, he finds her stuck down a well. She doesn’t want to talk about it or let you near the well, but she does want you to help her find a special magical item that she left in the castle. As you travel, you need to pick up everything you’ll need for the wedding. There’s also an intriguing story hint about everyone being clones...

The Score
Story: 10/10
So far, I’m finding the story very interesting. There’s a mystery about why everyone looks the same and about who dug the wells that the princess wants us to avoid. I have a feeling that there’s going to be a very satisfying end.

Characters: 7/10
I didn’t see much characterization in the game. I couldn’t tell one person’s personality from another. At the same time, I didn’t mind the lack of developed characters because they aren’t what drive the story forward. 

Writing: 10/10
The writing is fantastic. It’s clear, witty, and humorous. There are no typos or grammar issues, which lends credibility to the developer’s professionalism. 

Mapping: 8/10
The maps are simple but full and charming. They fit the style and mood of the game.

Art: 10/10
The visual style of Yu is purposefully retro and makes the game stand out from other RPG Maker games. I like the custom sprites and character faces.

Creative Game Design: 5/10
This game doesn’t do anything out of the box, but what it does, it does well. I appreciated how many hints were given to the player about what to do next.

Gameplay: 10/10
Yu fits the profile of a standard RPG that follows the mechanics of talking to NPCs, battling, learning new skills, and finding loot and equipment. That’s not to say anything against it. I found the game to be very enjoyable, and while I didn’t get that far, the developer says that there are multiple endings possible, which adds to the replay value.

Technical: 10/10
The game runs very well. The controls are user-friendly, and the developer has made some nice changes in presentation that fit the mood of the game.

Music: 10/10
The music is fast-paced and fun. I especially enjoyed the battle music. It’s unique and catchy.

Sound: 5/10
There aren’t many sound effects for map events, which makes them feel a little empty. In other words, where I was expecting a sound, there wasn’t one. Still, the sound effects the developer does use are pleasant and fitting.

Recommendation
Well, Yu Will be a Prince is a game that I would definitely like to play to the end. If you enjoy a good story and the tried and true mechanics of a classic RPG, I don’t think you’ll be disappointed.