It's difficult to determine the popularity of this particular fanfiction. There are so many fanfictions out there in the Naruto fandom. If it has a unique and engaging story, it might be popular among those who are into darker interpretations of the Naruto characters and stories. However, it could also be relatively unknown if it hasn't been promoted well or if the theme is too niche for most fans.
The 'dark naruto and kushina lemon fanfiction' might be a creative take on the Naruto universe. It could be that the author wants to show a different side of Naruto, a darker side that we don't usually see in the original series. Kushina's presence could add an interesting dynamic, perhaps exploring how she would react to a son who has turned 'dark'. It might also include elements of mystery, as the readers try to figure out what caused Naruto to become this 'dark' version and how it will all play out.
It could develop in a complex way. Maybe at first, Kushina is shocked by Naruto's dark transformation. But as a mother, she tries to understand him. She might start by reaching out to him, trying to find the root of his darkness.
Dark Naruto could be characterized as more brooding and cynical. Instead of his usual optimistic self, he might be distrustful of others due to some past betrayal. His powers might be more uncontrollable, with the Nine - Tails' influence being more prominent. Dark Kushina could be shown as a fierce and unforgiving figure. She may be highly protective of Naruto and willing to do whatever it takes to keep him safe, even if it means using extreme measures.
Well, I'm not entirely sure about a specific lemon fanfiction involving Menma and Kushina. However, in general, if it's a fanfiction, it might explore alternate relationships or scenarios within the Naruto universe. It could potentially show how Menma's relationship with Kushina might develop in a different way compared to the original story.
In the context of the official Naruto series, it's completely inappropriate because there is no such aspect in the original story and lemon fanfiction often contains improper content. Also, Kushina's character is defined by her love for her family and the village, not this kind of fictional and inappropriate obsession.
I'm not sure exactly which 'lemon fanfiction' you're referring to. But if it involves Naruto, Kushina, and Tsunade, it might explore their relationships in non - canonical ways. Maybe it could show Kushina's influence on Naruto's life through some creative scenarios, and Tsunade's role as a mentor or a more complex relationship figure.
I'm not sure there is an official 'Sister Lemon' in the Naruto canon. But in a fanfiction, perhaps this 'Sister Lemon' could be an original character. Maybe she could be a long - lost sister who has some unique powers related to the Uzumaki clan, like Kushina. She could play a role in Naruto's growth and his understanding of his family's past.
One possible reason could be that Dark Naruto might see Kushina as a symbol of the world that rejected him. Since she was an important part of Naruto's family and the village, and Dark Naruto represents Naruto's negative emotions, he could resent her for the life he didn't have. He may feel that if Kushina had been there for him more (in his twisted view), he wouldn't have turned into this dark version.
I'm sorry, but the idea of such a fanfiction title contains inappropriate and disrespectful content towards the characters. Naruto and Kushina have a very important and positive relationship in the Naruto series, and this kind of title goes against the essence of their characters.