I'm not entirely sure as I haven't read it in detail. But generally, it might be about witches and some sort of conflict or adventure related to them. Maybe it involves a story where the witches are being persecuted and there are characters who either want to burn them or save them.
I don't know specifically as I haven't read the novel. But it could have witches as main characters, perhaps a powerful witch who is the target of the 'burn the witch' sentiment. There might also be a hero or anti - hero character who is involved in the situation regarding the witches.
I would recommend 'Berserk'. It has some very dark and detailed black and white art. The story follows Guts, a lone swordsman, in a world filled with demons and dark magic. There are witch - like characters and the overall art style, especially in the manga, enhances the sense of doom and gloom. The black and white drawings are extremely detailed, making the battles and the nightmarish creatures look even more terrifying.
One great example is 'Puella Magi Madoka Magica'. Its black and white art in some scenes and overall witch - related themes create a dark and complex story. The witches in this anime are often depicted in very unique and somewhat grotesque black and white art styles, which add to the overall atmosphere of the story about the price of wishes and the battle against dark forces.
Well, 'burn baby burn' gives the impression of something exciting or chaotic. In the context of a TF2 fanfic, it could be about a situation where the characters are in a really tough fight. Maybe there's a lot of destruction and high - energy action. For example, it could be about a battle between the two teams where the environment is on fire and the characters are fighting tooth and nail to win. It could also be about a character's personal journey within the game's world that has this 'burning' or intense aspect to it, like a character facing a really difficult challenge that they have to overcome with a lot of passion and determination.
I'm not sure if it's popular. There are so many TF2 fanfics out there, and without more information or some kind of popularity metric like views or reviews on a particular fanfic site, it's hard to say.