It's a timing trick to get past it! This scene mirror reverses so you may need to invert left/right but the solution is that once you've gone left-right and th

It's a timing trick to get past it! This scene mirror reverses so you may need to invert left/right but the solution is that once you've gone left-right and then jumped forward you'll have to do something like left-right-left-<press right again IMMEDIATELY after pressing left before the animation stops>. Then a final forward, then sword. Then you go on.