Made in Abyss, Hakumei to Mikochi Recommendations
Designs of the main character are both similar in chibi styles and take place in a fantasy world. If you like kids going on a fun adventure in general with some good music and great supportive characters, then this is a must watch for you.
Both anime have a similar style, that is - Chibi-style. And so, the anime have a similar genre - the road movie.