>>3683780Depends on how invested you are in the series working through its natural conclusion of Haru and co. going professional and the reinclusion of the High Speed 2 characters into the story. Season three was a big fucking mess of wasted potential with occasional good points that may or may not be worth it for casual fans, but there's a recap movie version called Road to the World that cuts out most of the nonsense if you're really curious.
If you don't care so much about the swimming plot or the other High Speed kids, then Take Your Marks (a four episode OVA packaged as a movie) is the the only thing I would recommend. It's set between S2 and S3 and is about the seniors getting ready to go off to university. It's mostly fluff, but it's cute fluff.
