Learning through examples in manga
After mis-imagining her future self, Cocoa gives herself a re-do to imagine a better image. (Note that it appears in a noun form here.)
When Cocoa shows off her front crawl swimming form (while on her back flapping her arms), Syaro tells her she needs to re-learn how to swim.
Appending 直す to a verb stem gives the meaning of re-doing an action, with the intention of doing it better than before (fixing it).