According to Sasuke Susanoo is causing pain to its user but I didn't see on Madara that he was in any pain when he used his giant Susanoo against the 5 Kage...
Or it causes pain only to inexperienced users?
Later when Sasuke and Itachi fought against Kabuto Sasuke also seemed to be ''relaxed'' while using it very just like Madara...
Is it thanks to the EMS?
And in this case what's with Itachi?
I know it depends on the users chakra reserves as well, but all three known Susanoo users have exceptionally huge amount of chakra so it can't be the only key...
Or it causes pain only to inexperienced users?
Later when Sasuke and Itachi fought against Kabuto Sasuke also seemed to be ''relaxed'' while using it very just like Madara...
Is it thanks to the EMS?
And in this case what's with Itachi?
I know it depends on the users chakra reserves as well, but all three known Susanoo users have exceptionally huge amount of chakra so it can't be the only key...