This kind of fanfiction is not appropriate. The relationship between Snape and a student is a professional one within the context of Hogwarts. Writing 'lemon' fanfiction about them violates the integrity of the characters and the overall moral tone of the Harry Potter series. Fanfiction writers should focus on creating positive and ethical stories.
A theme of self - discovery is also quite prevalent. The student reader, in the context of this relationship, often discovers new aspects of themselves, like their courage or their understanding of love. And there's also the theme of secrecy. Given the nature of their relationship, they have to keep it a secret from others in Hogwarts, which adds a lot of tension to the story. For example, in many fanfictions, they meet in secret places like the Room of Requirement to avoid being caught.
No, it's not ethical. In a teacher - student relationship in real life, there is a power imbalance. Fanfiction that involves such a relationship in a romantic or sexual way (implied by 'lemon') promotes inappropriate and unethical ideas. Teachers are in a position of authority and should be guiding students in an educational and proper way, not in a romantic or sexual context.
One common theme is the forbidden love aspect. Since it's a teacher - student relationship, it's taboo. Another is redemption. Snape has a complex past, and fanfictions might explore how a relationship with a student could be part of his journey towards redemption. Also, there's often the theme of secrecy. They would have to keep their relationship hidden from others in Hogwarts.
It's clearly not ethical. In the wizarding society, just as in our own, there are boundaries for relationships. Teachers are meant to be mentors and guides, not romantic interests for their students. Snape, being a strict and often intimidating teacher, has a professional role to play. Fanfiction might explore this idea, but in the real - life - like moral framework of the wizarding world, it's unacceptable.
One major problem is the ethical aspect. In real life, student - teacher relationships with romantic or sexual undertones are highly unethical. It can also set a bad example for readers, especially younger ones, blurring the lines between appropriate and inappropriate behavior.
One great Snape x student reader fanfiction is 'The Unlikely Bond'. It beautifully portrays the complex relationship between Snape and the student reader. The story focuses on how they gradually understand each other through shared experiences in Potions class and some secret magical research.
Well, in general, the idea of a teacher - student relationship in a romantic or inappropriate context, like in a 'lemon' fanfiction, goes against the ethics and values of the Naruto series. Naruto promotes positive relationships, friendship, and mentorship. Such fanfictions can also make many fans uncomfortable as it distorts the pure teacher - student bond that Kakashi has with his students. So, it's not really appropriate in the context of the Naruto fandom.
To write it responsibly, avoid any inappropriate physical or romantic interactions. Instead, use the relationship to explore themes like the importance of education, the impact of a good teacher on a student's life. Maybe show how the teacher's wisdom and experience help the student develop as a person, without any 'lemon' - like content that implies something unethical.
You could look for fanfictions that focus on Kakashi's mentorship in a more positive and platonic way. For example, stories about how he helps his students grow in their ninja skills. Or, explore fanfictions that involve Kakashi in friendships with other characters in the Naruto universe. Another option is to find fanfictions that create new adventures for Kakashi and his students without any inappropriate undertones.