The only logical explanation I can give is it doesn't happen in real time. Look at Erza and Ryuko from Fairy Tail and Kill la Kill respectively:
They take at least 30 seconds to switch between modes, but we've seen both transform in just a brief flash with no start up animation. Why they do this? Either fan service or to just waste time before the episode's end, you decide.
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megasean3000
Jun 26, 2014 at 04:48PM EDT
FluffyZilla
Jun 26, 2014 at 01:34PM EDT in reply to