Most likely not. 'Lemon' in fanfiction usually indicates something that contains sexual or inappropriate content. Naruto is a popular franchise with a wide fan base including children. Fanfictions should stay within the boundaries of propriety and respect for the original material, and this kind of 'lemon' fanfiction does not seem to meet those criteria.
Perhaps in the fanfiction, Naruto perfects the Sexy Jutsu to the point where it can be used for espionage. He could transform into a seductive character and infiltrate enemy strongholds, gathering valuable information without being detected. This would add a new dimension to his ninja skills.
He might become more confident. As he perfects the Sexy Jutsu, he has to overcome his initial shyness or hesitation. This new - found confidence could spill over into other aspects of his life, like his battles and his interactions with others.
Well, it could be that the Sexy Jutsu has some sort of psychological effect on the Third Hokage. Maybe it reminds him of someone or something from his past that makes him hesitate. And in that moment of hesitation, Naruto is able to use the distraction to his advantage and defeat the Third Hokage. Also, Naruto might be able to use the jutsu in combination with other moves in the fanfiction. For instance, while the Third Hokage is distracted by the Sexy Jutsu, Naruto quickly follows up with a Rasengan.
I'm not sure specifically as I haven't read that particular fanfic. But generally, the Oiroke no Jutsu in Naruto is a transformation jutsu used by Naruto. A fanfic about it might explore different scenarios related to how the jutsu is used, its impact on the characters around, or might even be a comical take on it.
I'm not entirely sure as 'oiroke no jutsu' is not a very common term in mainstream media. It could potentially be a fan - created concept within a specific fandom. However, without more context, it's difficult to say exactly what the fanfiction might be about.
In Naruto fanfiction, cheat codes can drastically change the use of jutsu. They might allow a character to instantly master a jutsu that usually takes years of training. For example, a cheat code could give Naruto the ability to use the Rasengan without any training from Jiraiya. It's a fun concept that adds an interesting twist to the Naruto universe.
I'm not sure specifically as I haven't read this particular fanfic. But generally, in a Naruto fanfic with a harem jutsu theme, it might involve Naruto using his harem jutsu in new and unexpected ways, perhaps in some sort of adventure where his unique jutsu plays a key role in interactions with other characters.
In fanfiction, it could be that the Sexy Jutsu has a hidden power. Maybe it emits a certain type of chakra wave that affects the Third Hokage's senses. Since he's an older ninja, his senses might not be as sharp when it comes to dealing with such an unorthodox jutsu. So, Naruto's Sexy Jutsu can disrupt his balance and make him vulnerable to Naruto's attacks.
In fanfiction, the reanimation jutsu might have extended or modified limitations. For instance, in the original, there were clear rules about the caster's control over the reanimated. But in fanfiction, a writer could create a scenario where the reanimated can break free of that control more easily. Also, the source of the sacrifice for the jutsu could be different. In the series, it was usually human sacrifices, but fanfiction might explore using other forms of energy or substances.