"Naruto SD: Rock Lee no Seishun Full-Power Ninden" is a comedic spin-off of the popular "Naruto" series, focusing on Rock Lee and his fellow ninja from the Hidden Leaf Village. The series adopts a super-deformed (SD) art style, emphasizing exaggerated humor and slapstick comedy. The narrative revolves around Rock Lee, a ninja who lacks the ability to use ninjutsu or genjutsu but excels in taijutsu, or hand-to-hand combat. Despite his limitations, Lee is determined to prove his worth as a ninja through hard work and perseverance.

The story primarily takes place within the Hidden Leaf Village and follows Lee's daily life, training, and interactions with other characters. Key figures include Might Guy, Lee's eccentric and overly enthusiastic mentor, who shares a similar dedication to taijutsu. The series also features Neji Hyuga, Tenten, and other members of Team Guy, as well as characters from the main "Naruto" series, such as Naruto Uzumaki, Sasuke Uchiha, and Sakura Haruno, who appear in comedic and often absurd situations.

Episodes are largely episodic, with each focusing on humorous scenarios that highlight the quirks and personalities of the characters. Common themes include Lee's relentless training regimen, his rivalry with Neji, and his attempts to win the affection of Sakura, who remains largely indifferent to his advances. The series frequently parodies the original "Naruto" storyline, reimagining serious moments as over-the-top comedic sequences. For example, Lee's iconic fight with Gaara during the Chunin Exams is reinterpreted as a comedic battle filled with exaggerated expressions and absurd outcomes.

The humor in the series is broad and often relies on physical comedy, exaggerated reactions, and playful subversions of the original series' tone. Despite its comedic focus, the show occasionally touches on themes of friendship, determination, and self-improvement, reflecting the core values of the "Naruto" franchise. The series serves as a lighthearted companion to the main storyline, offering fans a different perspective on familiar characters and events.