The only thing worth mentioning is, Naruto puts a Kuni into his left hand and says that --- I will remember this pain in my left hand to remind me that I need never be rescued by somebody else. --- (This happens at the very end).
This way of inducing pain or remembering a fact, is extremely powerful. Imagine, kids seeing this on TV and in their conscious, subconscious or unconscious applying this fact 'of physical inducing pain in order to remember something'. Whoa! That would be extreme-rememberance.
This 257 episode is an utter waste of time. Old memories are being revised for what, the creators of Naruto Shippuden just wanted a weak and they pulled up Naruto's Shippuden's archive and displayed an age old childish conflict between Sasuke and Naruto.
"S**t! nothing happens" - that's how I'd like to define this episode.
Team 7 seen. Naruto seeing the similarities he has with Sasuke. Sasuke acting the way he always does, stubborn, stern and with single-goal oriented mind.
To watch the episode Google "Naruto Shippuden Episode 257: Meeting "