Yes, it can be quite popular among fans who enjoy crossovers and shipping different characters. People like to explore the dynamic between Naruto's energetic and determined nature and Raven's more mysterious and brooding personality in a romantic context.
One common theme is the clash of their different cultures. Naruto is from a world of ninjas with strict hierarchies and training systems, while Raven has her own complex backstory in a more magical/supernatural setting. Another theme could be the power dynamic, as both are powerful in their own ways.
Well, their story could be full of mystery. Naruto, as a demon in this fanfic, might have a dark allure that draws Raven in. They could start off as enemies, perhaps due to some misunderstanding between the world Naruto comes from and Raven's world. But as they interact more, they discover a connection that neither expected. Maybe Naruto's demon powers are the key to helping Raven with some problem she has in her own life, and that starts the romance.
Their powers could interact in a complementary way. Naruto's demon powers might give him enhanced strength and speed. Raven's powers, which are often associated with magic or some kind of psychic ability, could be used to control or direct Naruto's more chaotic demon powers. For example, she could use her powers to calm Naruto when his demon side is about to go out of control.
Naruto has his chakra - based powers like the Rasengan. Raven has his telekinetic and shadow powers. They could combine Naruto's Rasengan with Raven's telekinesis to create a super - powered attack, where Raven uses his power to guide and enhance the speed and force of Naruto's Rasengan.
In many fanfictions, Naruto's raven summon can be portrayed in various ways. Sometimes it's a sign of a new and unique power he has acquired. It might be used as a messenger, similar to how ravens are often seen in real - world folklore as carriers of information. The raven could also have special abilities like enhanced sight or the ability to blend into the shadows, which Naruto can then use to his advantage during battles or missions.
A common theme is friendship. Since they are from different universes in the fanfictions, they often have to learn to trust and be friends with each other. For example, Naruto's concept of comradeship blends well with the Teen Titans' teamwork.
I'm not entirely sure as there could be many interpretations. It might be a fanfiction that combines elements from Naruto and RWBY, with Naruto somehow being related to Raven in this fictional crossover scenario.
One main theme is adaptation. Raven has to adapt to the Naruto world which is very different from her own. Another is identity, as her transformation often makes her question who she is in this new context. And there's also the theme of power, as her new form may bring new powers or change the way she uses her existing ones.
Common themes in Naruto and Raven lemon fanfiction may include power dynamics. Since Naruto has his own set of powers and abilities in the ninja world and Raven has her powers, there could be a theme of who is more dominant in the relationship, both in terms of power and personality. Another theme could be the cultural differences between their respective worlds. Naruto's world has its own set of values, traditions, and taboos, and Raven's world also has its own. How these interact and are navigated within the context of their relationship can be an interesting theme. Also, the theme of transformation is often present, as both characters may change and grow as a result of their relationship.