Frieren: Beyond Journey’s End

The Frieren: Beyond Journey’s End watch order opens with the 28-episode first season, then weaves three ONA shorts around a second block of 10 episodes. Start with Episodes 1–28, which cover the early journey, before watching the Sousou no Frieren: ●● no Mahou ONA and its Part 2. From there move to the 10-episode continuation, after which the ONA's Part 3 slots in, and a third season is already confirmed. Placing the ONA vignettes in this order keeps them beside the arcs they expand rather than tacked on at the end. If you just want the main story, the 28-episode first season followed by the newer episodes is enough, but for the complete chronological order including every ONA this is where to start and how each short fits between Madhouse's main seasons.