The main characters are obviously Kakashi and Naruto. Kakashi is the experienced and cool - headed ninja, while Naruto is the energetic and determined protagonist.
Perhaps a plot where Naruto's determination in the face of some sort of 'heat' - like a difficult situation in the village, and Kakashi is there to guide him. It could involve Naruto learning new jutsus under Kakashi's tutelage while also dealing with his own growing pains.
Well, there could be. Fanfiction writers love to explore unique and unexpected relationships. Since Naruto and Kakashi are both popular characters in the Naruto universe, some writers might come up with such a plot for the sake of creativity and exploring different storylines. But it's not a part of the official Naruto story.
If we consider the concept of Sakura 'in heat' in a non - inappropriate way, perhaps it could symbolize a period of intense emotion or a turning point in her character arc within the fanfic. It could be that she becomes more determined or passionate about something related to Kakashi, like her ninja skills or their relationship.
Sasuke could be a popular character. He might be involved in the story in a way that either helps or hinders the situation where Naruto hurts Kakashi. For example, if Sasuke tries to stop Naruto from doing something stupid that would hurt Kakashi.
Another reason could be related to Kakashi's past actions. If there are some secrets or things Kakashi did in the past that come to light and Naruto doesn't like them, he could snap at Kakashi. Naruto has a strong sense of justice and loyalty, so if he feels betrayed or misled by Kakashi, his reaction could be to snap.
You can explore regular Naruto fanfiction that focuses on adventure, like stories about Naruto going on new missions or exploring uncharted areas in the ninja world.
I'm not sure specifically about a 'Demon Naruto Heat Lemon' fanfiction. There are countless Naruto fanfictions out there, but such a title might be a very specific or even a made - up combination. You can try searching on popular fanfiction websites like FanFiction.net or Archive of Our Own to see if it exists.
Well, it could be about Naruto having some sort of uncontrollable energy surge that he has to learn to manage. Maybe he starts to train extra hard to burn off this excess energy. It could also involve his friends noticing his strange behavior and trying to help him figure out what's going on.
Often, in these types of fanfiction, 'heat' can refer to the intensity of their emotions. For example, the passion in their friendship or a budding romantic relationship. It can also be related to the heat of battle, where both Naruto and Sakura are pushed to their limits and their true selves shine through.