This Naruto fan art contains
le gambe nude, collant, pantaloni attillatissimi, attillato, gambe nude, and attillatissimi.
There might also be
calze, tubo, hosiery, hose, calzetteria, tubo flessibile, occhiali da sole, occhiali scuri, ombre, sfumature, collant, body, and collant e calzamaglie.
I guess the animators decided to make their own version of a Naruto/Sasuke fight. It's completely not canon and the first half of it is basically flashbacks...