I'm not sure specifically as it depends on the particular version of the 'Fall of the Dark Brotherhood Story'. But it could include leaders within the Dark Brotherhood and those who oppose them.
I'm not aware of any particular author for a 'dark fall novel' as the name is quite general. There could be multiple novels with this title by different authors.
The 'dark fall novel' could potentially be about a personal journey of a character into darkness. It might explore themes like loss, despair, and the human condition. For example, the protagonist could experience a series of tragedies during the fall season, which leads them on a path of self - discovery in a very dark and challenging way. The fall could symbolize the decay of their previous life or beliefs, and the story could be about how they navigate through this new, dark reality.
Well, in the 'Fall of the Dark Brotherhood Story', it might tell of how the Dark Brotherhood, which is usually a secretive and often feared assassin - like organization in many fictional universes. Their fall could be due to a hero or a group of heroes who decided to take them on. Maybe they were getting too powerful and attracting too much unwanted attention, so various factions united against them. It could also be because of a schism within their own ranks, where different ideologies clashed and tore the organization apart from the inside.
In the 'fall kids story', the main characters might be a set of neighborhood kids. There could be a tomboyish girl who is always leading the way in leaf - raking competitions. There might be a bookish boy who discovers a new love for the outdoors during fall. And perhaps there are also some animal characters like squirrels or birds that the kids interact with as they go about their fall adventures.
There could be a variety of characters. Maybe a brave adventurer who is drawn to the mystery of the dark house. There could also be previous inhabitants whose presence is still felt in the house. And perhaps there are some local people who warn the main character about the house, adding to the sense of mystery and danger.
Zhang Xiaohou, the full-time Mage, fell into the Dark Abyss. Many articles mentioned Zhang Xiaohou falling into the Dark Abyss, including how he had been forced into a corner by the Corpse General, how Mo Fan had given up on the nomination battle to find him, and how he had been saved by Zhan Kong after sacrificing himself to save the Ancient Capital during the Calamity. Therefore, Zhang Xiaohou had fallen into the Dark Abyss.
The fall of Tang Rou in the Dark adaptation of the full-time expert was an important part of the plot. Tang Rou had announced a 1v3 in the competition, but she had later broken the promise, causing her reputation to suffer. As for why the author had set up this plot, the search results did not provide a clear answer. Therefore, based on the information provided, I can't answer why Tang Rou fell in the Dark adaptation of the full-time expert.