well it will last more than five minute the more he gets use to it and you guys are bias all the while sasuke is the one that as been getting the power ups and now is the time for naruto to get power ups and you guys are still down grading the character whats up with you guys naruto is far stronger than sasuke now and there is no way both of them will be on the same level ok naruto will always be a head by a big gap ok.
naruto needs mor training to go to perfect form, because in the lastest chapter kurama said "we are far from the perfect form" so the perfect can stay longer like killerbee.
