Well, one possibility could be that Naruto somehow enters the world where Nnoitra exists. Maybe he's on a mission to understand a different kind of power system that Nnoitra has. And through their interactions, Naruto starts to learn new combat techniques and ways of thinking. He might also try to change Nnoitra's violent nature with his own ideals of friendship and perseverance.
Obviously, Naruto and Nnoitra are the main characters. Naruto, the energetic and determined ninja from the Hidden Leaf Village, and Nnoitra, the powerful and often aggressive character from another world.
Adaptation is also a key theme. Nnoitra has to adapt to new environments, whether it's a different time period, a new world with different physics, or a society with different social hierarchies. This can lead to some really interesting character development as he tries to find his place in these new situations.
One common theme is the 'opposites attract' concept. Since Nnoitra has a rather rough and aggressive personality, the contrast with the reader's more normal or gentle nature is often explored. Another theme is the idea of redemption. Nnoitra may be seen as a character who can be redeemed through his relationship with the reader.
The contrast between their personalities. Nnoitra is often rough and aggressive, while Shinji can be more laid - back and mysterious. This clash can create really engaging storylines in fanfiction.
Some Tumblr blogs also focus on fanfiction. Follow some blogs that are related to the anime or manga where Nnoitra and Shinji come from. They might reblog or recommend some great Nnoitra x Shinji fanfictions.
Well, 'Nnoitra Meets the Mysterious Realm' is another interesting one. This fanfiction has Nnoitra crossing into a realm filled with mysterious creatures and powers. He has to use his strength and wits to survive and figure out a way back home. The detailed descriptions of the new realm and Nnoitra's reactions make it a captivating read.
One great nnoitra x reader fanfiction is 'A Meeting with Nnoitra'. It really captures his rough personality well while developing an interesting relationship with the reader character. Another is 'Nnoitra's Unlikely Bond' which has some unique plot twists that keep you engaged.
" Fantasy: Marriage to the Disfigured Saintess at the Beginning " was a fantasy novel. The story revolved around a disfigured Saintess. She was faced with the predicament of being talked about and despair, but the male lead Fang Ming said that no matter what her appearance was, he still loved her deeply. This novel involved the Cultivation Conference and demons. It was a fascinating story.