When Orochimaru's poison leaves Guy-sensei completely bald, it's up to Lee and the gang to find him the right wig. Our beloved narrator comes down with a bad cold, and much to Tenten and Neji's chagrin, Lee's his temporary replacement.
kept his back straight, 
and pushed off the ground.
mantuvo su espalda derecha, 
y empujó desde el suelo.
mantiene recta la espalda 
y empuja desde el suelo.
mantém suas costas 
retas e vai até o chão.