The episode primarily takes place within Naruto’s subconscious as he recovers from hyperventilation brought on by the immense pressure of recent events.
While some viewers at the time found the heavy use of flashbacks frustrating, many reviewers from WeAreAwesomeness and Narutopedia noted their narrative purpose:
Are you planning to , or REVIEW: Naruto Shippuden Episode 213 - More Flashbacks!!! Naruto Shippuden Episode 213
In the vast world of Naruto Shippuden , certain episodes serve as emotional anchors that ground the high-stakes action in deep-seated character history. Episode 213, titled " Lost Bonds " (失われた絆, Ushinawareta Kizuna ), is a reflective entry that dives deep into the fractured relationship between Naruto Uzumaki and Sasuke Uchiha. The Plot: A Journey Through Memory Lane
Naruto wakes from a vivid dream about his climactic battle with Sasuke at the Valley of the End , where Sasuke first declared his intent to sever their bond. Episode 213, titled " Lost Bonds " (失われた絆,
Interestingly, the episode features reanimated flashbacks from the original series, updated with Shippuden -era graphics. Fans see revisited moments like the Tree Climbing Practice in the Land of Waves and their early rivalries in shurikenjutsu.
By showcasing how far Sasuke has fallen from the "genius rival" Naruto once admired, the show heightens the tragedy of their upcoming confrontation. Fans see revisited moments like the Tree Climbing
After waking and finding Yamato keeping a close watch, Naruto eventually manages to trick his guardian and sneak out of the inn to pursue Sakura and Kakashi, who have gone ahead to find Sasuke. Why the Flashbacks Matter
ORO 
EN