Often, the theme of longing and desire is prevalent. Since their relationship has so many obstacles in the original story, fanfictions tend to play with the idea of their unfulfilled desires. This can be seen in how the lemon elements are incorporated to heighten the sense of yearning between them. Additionally, themes of jealousy and possessiveness might also come up, as both characters have strong personalities and emotions when it comes to each other.
You can try searching on fanfiction platforms like Archive of Our Own (AO3). It has a large collection of fanfictions, and you can use the search bar to specifically look for works related to Nana Osaki and Ren Honjo. Another option could be FanFiction.net, although the content quality may vary more there.
Nana Ouyang was a cellist, actress, and singer China Taiwan. In 2011, she won the Taiwan Cello Competition and won first place in the National Taiwan Normal University High School Music Class. After she made a name for herself in the film and television industry, she became a well-known musician and artist. Ouyang Nana had won many awards and nomination, and was praised by netizens as the "Goddess of Cello" and "Charming and sexy." She was also the spokesperson for the Sonny headphones. Regarding her appearance, netizens had different opinions about her appearance. From cute to beautiful, from childish to mature, her image varied. All in all, Ouyang Nana was a multi-talented young artist who received a lot of attention.
Ouyang Nana was a cellist, actress, and singer China Taiwan. She had made some achievements in her acting career and received many awards and nomination. Her acting skills and appearance received a lot of attention and praise from many people. However, there were also some people who questioned her acting career and her piano skills. In short, Ouyang Nana had a certain degree of popularity and influence in the entertainment industry.
One common theme is friendship. The two Nanas have a very unique bond, and many fanfictions explore how deep that friendship can go. It could be about them supporting each other through tough times in their lives.
One popular 'nana x nana fanfic' story could be about their adventures in a new city together. They might discover new music and bond over it, exploring the local music scene.