Both shows feature incredible fantasy worlds with deep lore. While Frieren focuses more on the journey after the demon king is defeated and the passage of time, Solo Leveling is purely about getting stronger and action. However, the animation quality in both is top-tier and they both give you that satisfying feeling when the main character shows off their true power.

The pacing is different but if you enjoy fantasy settings with magic systems, both are great watches. Definitely recommend both if you haven't seen them.