I actually found this ONA by chance and it was a tremendous surprise. 6 chapters rich in a very complete plot, full of adventure and reflection. I thought it was another children's show with an RPG theme, but I keep my mouth shut. It's totally PG13. The CGI animation, similar to The Legend of Zelda: Echoes of Wisdom, is well-cared for. Here, you'll see that the characters have different expressions. There's a great variety in the designs, of course, especially in the key characters, but even the background ones won't feel generic. In the scenarios, in each battle, you'll see the consequences of the fights anda static background.

On YouTube, the anime is complete. The channel where they broadcast it can be watched without any problem. It has a wide variety of subtitles, and if you like it, they're already releasing the episodes of the second season.