A third theme could be the exploration of different cultures. Since Sao Feng is often associated with a particular fictional culture, the fanfiction could delve into how the female captives from different backgrounds interact with his culture, and how that shapes their relationship.
Often, original characters created by the fanfiction writers are used as female captives. They can be designed to have diverse personalities and backstories.
A common theme is the transfer of skills. Naruto has a lot of combat skills and abilities, and in SAO, these skills get adapted to the virtual combat environment. For example, her shadow clone jutsu might be turned into a way to distract opponents in SAO battles.
Another theme is self - discovery. Being thrust into the SAO world makes the reader character reevaluate who they are and what they're capable of. They might start off as a timid person but through their experiences in the virtual world, they grow into a stronger, more confident individual.
One common theme is sacrifice. Characters often have to sacrifice their love for the greater good in the dangerous world of Sao. For instance, they might choose to part ways to complete a crucial quest that could save many lives.
One common theme is changing the past. In many sao time travel fanfictions, the characters go back in time with the intention of altering events that happened in the original SAO storyline. For example, they might try to prevent certain deaths or change the outcome of a difficult battle.
One common theme is the relationship dynamics between the male characters. It often explores the emotional connection, the challenges they face in their relationship, and how they grow together.
One common theme is adventure. Since SAO is a virtual world full of danger and exploration, many fanfics focus on the reader - inserted character going on epic quests, facing bosses, and exploring new areas. Another theme is romance. Fans often love to write about the reader character falling in love with the well - known characters from SAO like Kirito or Asuna.
In some cases, captives could be turned into mind - controlled servants. The Dark Brotherhood has some dark magic or potions that could be used to manipulate a captive's will. Once under their control, these captives would be used to carry out tasks that the Brotherhood didn't want to risk their own members on, like delivering a dangerous package or spying on a well - guarded location. This way, the Brotherhood can make use of the captive's skills while also ensuring their loyalty through mind control.
The pirate character could start as a typical rough - and - tumble outlaw, but as he spends time with the female captives, he begins to show a more vulnerable side. For instance, he might share his tragic backstory with them, which led him to become a pirate in the first place.
One popular story could be about a female OC who has unique sword skills in the Sao world. She might start as a novice but quickly rises in the ranks, making friends and facing challenges along the way.