Sexy Technique

The Sexy Technique is simply a Transformation Technique used to transform the user into a beautiful, nude woman in a very seductive posture with mists of smoke covering her privates, or in a bathing suit. Naruto uses it to distract or win over men, sometimes leading to an exaggerated nosebleed by the victim or even unconsciousness. Though some men have been able to resist it, such as Killer B, but the technique he resisted was technically Harem Technique.

After Naruto returned in Part II, he bragged that he has upgraded this jutsu, which he referred to as the a new-and-improved upgrade for this technique, but he was punched into the distance by Sakura before he had the chance to perform it. In the omake chapter in the second Naruto Fanbook, Naruto performs the upgrade in front of Jiraiya taking place during the time-skip.

Trivia

 * The woman Naruto transforms into when he uses the Sexy Technique has been dubbed "Naruko" by the fandom, inspiring many pictures of fanart and fan fiction.
 * In the fandom, the Sexy Technique has been used on various characters of the series as a source for fanart. It is popular in both fanart and convention cosplay (allowing female cosplayers to play male characters, e.g.).