Total Recommendations: 4
Both shows may seem different due to Soredemo Sekai wa Utsukushii having the romance/ shoujo genre, while Sanzoku no Musume Ronja is more in the "children show" genre. BUT: Both Soredemo Sekai wa Utsukushii and Sanzoku no Musume Ronja have fantasy/ adventure elements and a comedic, relaxed pace to the show. Both also have an adventurous, strong willed MC heroine as well as similar & great soundtracks and songs played within the anime. Also I believe both shows are underrated anime gems!
Both anime have similar art styles and they both have some super natural elements. Both MC's have similar personalities and style as well.
Both of these anime's fall under the horror, supernatural, and thriller genre! Both female protagonists have black haired, red eye color, and lack showing emotions. Both anime's have a big deal that revolve around the idea's of death and curses. And both are very entertaining and mystical to watch!
Both Clannad and Kobato leave give you a heart warming and good feeling after watching. Both female protagonists are cute, kind, and gentle. I highly recommend watching both these series for a feel good mood!