Another theme is redemption. Fanfic authors like to explore the idea of Akutagawa making up for his past wrongs. He might be given a chance to save someone or change an event that he regrets in his past. It gives a new dimension to his character.
One great BSD Akutagawa crossover fanfiction is 'Akutagawa in Another World' which explores what would happen if Akutagawa was transported to a different universe. It has an interesting plot where he has to adapt to new powers and a new society.
The 'scaramouche novel' could cover a wide range of topics. It might be set in a historical period, a fantasy world, or a science - fiction realm. If it's a historical novel, perhaps Scaramouche is a real - life figure or based on one. In a fantasy setting, he could be a wizard, a knight, or some other extraordinary being, and the novel would follow his journey through that magical world, dealing with magical creatures, political intrigue, and personal quests.
I don't know the author of the 'scaramouche novel' without more information. There are many novels with this name or a similar name, and different works may have different authors.
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.
Well, the childe x scaramouche comic could potentially focus on their adventures, power struggles, or the development of their relationship. It might have elements of fantasy and action.