Fukuzawa, the president of the Armed Detective Agency, would be a good character to include. His leadership and wisdom can influence the events involving Soukoku. Higuchi, who is loyal to Akutagawa, can also be added. Her interactions with Soukoku can be used to explore the power dynamics within the Port Mafia. And Elise, Mori's ability manifestation, can add an element of mystery and unpredictability to the fanfic.
Popular shin soukoku fanfics usually have a strong emotional core. They make readers feel the connection between the two characters, whether it's loyalty, love, or just a deep friendship. The pacing is also important. It shouldn't be too rushed or too slow. A good fanfic will have a balance, gradually building up the story. Additionally, the fanfic might incorporate elements from the original work's world - building, like the different organizations in Yokohama. This gives a sense of familiarity and authenticity to the readers.
Most BSD light novels often have complex characters. Since they are based on literary figures, they bring in the depth and complexity of those original personas. For example, a character might have the same traits as a famous writer but with a unique twist for the BSD universe.
The appeal of all BSD novels lies in their ability to create immersive worlds. They draw readers in with their unique concepts and engaging storylines. For instance, the way they handle character relationships is very captivating. The conflicts and reconciliations between characters make for a great read.
Honestly, there's no definite answer on when the BSD manga will end. It all comes down to various factors like the author's inspiration, the popularity of the series, and the publisher's decisions.