Naruto Shippuden Episode 451 | LEGIT · 2027 |

While technically classified as a filler arc because it is not adapted from the original manga chapters, many fans consider the Itachi Shinden arc (Episodes 451–458) essential viewing. It provides critical psychological depth to Itachi, explaining the motivations behind his future actions that shaped the entire Naruto universe.

The episode poignantly juxtaposes Itachi’s exposure to death with the birth of his younger brother, Sasuke, which gives him a new sense of purpose and "life". Critical Reception and "Filler" Status

A young Itachi, only four years old, witnesses the aftermath of the Third Great Shinobi War. After showing mercy to a dying enemy who then tries to kill him, Itachi is forced to take his first life, leading him to question the value and meaning of existence. Naruto Shippuden Episode 451

The episode opens with the devastating realization of the Infinite Tsukuyomi . As Madara Uchiha’s ultimate genjutsu takes hold, the world is plunged into an eternal dream. We witness various shinobi trapped in their own idealized realities: Dreams of a peaceful life with Naruto.

Envisions a life free from the "troublesome" responsibilities of marriage. While technically classified as a filler arc because

We see Itachi’s relationship with his father, Fugaku, and his introduction to the philosophy of the Uchiha clan.

As the present world falls silent, the episode shifts into a long-awaited flashback arc adapted from the Itachi Shinden novels. This segment, titled "Birth and Death," explores the formative years of Itachi Uchiha. Key highlights of this backstory include: Critical Reception and "Filler" Status A young Itachi,

Sees himself finally achieving the title of Hokage.