Yes, Episode 258 is classified as . It is the second episode in a four-part special (Episodes 257–260) designed to recap the bond and growing rift between the two lead characters. Should You Skip It? Rivals (episode 258) | Narutopedia | Fandom

The episode concludes with Sasuke and Kakashi’s dramatic entrance into the Chunin Exam arena just before Sasuke’s disqualification. Is Episode 258 Filler?

The episode revisits Sasuke’s intense training with Kakashi on the cliffs. It shows the moment Kakashi confirms Sasuke's Lightning Release affinity and decides to pass down his unique technique, the Chidori.

Naruto Shippuden Episode 258, titled ( Raibaru ), is a nostalgic trip back to the series' roots. While it serves as a filler episode, it offers significant emotional weight for fans of the Naruto-Sasuke dynamic, reimagining classic moments in updated animation. Episode Plot Summary

The episode primarily consists of flashbacks to the original Naruto series, specifically focused on the . Key highlights include:

Sasuke witnesses Naruto’s explosive growth after his match against Neji and begins to truly view him as a worthy rival.