La La La! (Bare, Bare, Bare!): The Great Bread Battle!
Despite its title, the two competitors in this episode are not actually nude, rather undressing into the bare minimum clothing appropriate for the younger age groups. The episode starts with Kawachi commenting on Suwabara being foolish in using his sword to carve a wooden log in the middle of the road.
Aired 13/09/2005EP 45 - La La La! (Bare, Bare, Bare!): The Great Bread Battle!

Yakitate!! Japan
Kazuma Azuma wants to make bread. Not just any kind of bread, though. He wants to make a bread that represents Japan itself and can stand toe-to-toe with rice as a national food. Thanks to his legendary "Hands of the Sun," unnaturally warm hands that allow dough to ferment faster, Kazuma's bread is like a slice of Heaven.
And when the Pantasia Rookie Competition arrives, everyone will get a taste of his skill! Along with his friend Kawachi (who's only in it for the dough), he’ll go up against koala karate masters, Harvard bread scientists, samurai with rolling-pin swords, and more! Can Kazuma create bread like naan other and bake his way to glory, or should he quit before he's toast?
(Source: Right Stuf)