Many Western Naruto fans highly praise the Kazekage Rescue Mission arc in the early stages of the Shippuden anime series. Despite being shown in standard definition, this arc is beloved for its animation and the introduction of Akatsuki members like Sasori and Deidara. One of the key highlights is Sasori's unique ability to turn himself into a human puppet while still retaining a core of living flesh that resembles a heart. This core allows Sasori to maintain human-like faculties and abilities, leading to questions about his true nature and abilities.
The mystery surrounding how Sasori is able to incorporate this core into his puppet body adds to his enigmatic character. Though some details remain unclear, it is speculated that Sasori's advanced chakra manipulation techniques are key to his continued existence. Despite the ambiguity, this aspect of Sasori's character continues to intrigue Naruto fans.