While the episode adapts elements of Kaguya's backstory, it is considered mixed canon/filler as it expands significantly on details only briefly mentioned in the original manga.
In a pivotal moment, Hagoromo is forced to fatally wound Hamura to break Kaguya's control. The intense grief of this act causes his Sharingan to evolve into the Rinnegan . He immediately uses a Sage tag from Gamamaru to heal and resurrect Hamura. Naruto Shippuden Episode 462
A significant "Easter egg" in this episode is the first animated appearance of Urashiki Ōtsutsuki , who appears as a silhouette alongside Momoshiki and Kinshiki. This served as a direct setup for the Boruto series. While the episode adapts elements of Kaguya's backstory,
The battle against Kaguya—who transforms the God Tree into the Ten-Tails —lasts for months before the brothers successfully seal her away, creating the moon in the process. He immediately uses a Sage tag from Gamamaru