About as good as a JRPG can hope to be. Fun and with a lot of interesting characters.
The main character of the game is the princess of the kingdom of Arls who has decided to learn to be an alchemist. Her father gives her permission, providing she can help the kingdom develop to be ready to become part of the Arland republic. Meruru has to complete various requests such as combat and item synthesis/delivery in order to earn development points. She can then use these points to build new structures which help both her and the kingdom.
This game is a bit harder than the previous titles. Life Points (LP) are more significant at the start of the game and MP is harder to restore unless you rest or use items. You will need to spend a fair amount of game time creating the items you need to finish the development quests.