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A variant of the Transformation Technique, the Sexy Technique transforms the user into a naked woman usually surrounded by clouds of mist at private areas, or in a bikini, typically with seductive posture. Naruto uses this technique to distract or win over men with sex appeal, with all successful attempts causing an exaggerated nosebleed by the victim, while Konohamaru uses it to impress Naruto. Typically, the more perverted the victim, the greater their reaction will be.
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. ("crossplay")).