Well, one common theme could be friendship. In fanfiction, the Powerpuff Girls' bond might be explored further in the context of the abracadaver element. It could also involve transformation, perhaps the abracadaver has some power that causes unexpected transformations among the characters, leading to new adventures and challenges for the girls.
Some common themes could be magic and mystery. Since 'abracadaver' gives a sense of magic and the Powerpuff Girls already have a super - powered, somewhat magical origin. Another theme might be good vs. evil as the Powerpuff Girls are always fighting villains.
In abracadaver Powerpuff fanfiction, a prevalent theme could be discovery. The girls might discover new powers or abilities related to the abracadaver concept. There could also be a theme of family, like how the Professor who created the girls fits into the story when this new abracadaver element is introduced. Maybe the abracadaver has some connection to the girls' creation that they have to figure out, which would make family a key theme.
Look to Chapter 214 for the clearest answer. It begins with Director Sun fell silent for a second., keeps building through You know, you're right." Jiang Li: "...." Now, even the audience began to..., and lands on Even when Wen Jiaojiao fanned Richards' face frantically, he remained....
If you want the clearest chapter reference, go to Chapter 189. Early on, Seeing his painstakingly planted roses trashed like this, even as a fan of...; later, the chapter leans on Wenwen, I beg you, please take good care of my land!" "LOL, since when did....
A practical answer is Chapter 184, because it turns the idea into a concrete scene. The chapter opens with Jiang Li can finish the competition alone???, adds pressure through Director Sun, who had witnessed the whole process: "......" This is..., and ends on Slow down, I'm so scared." "Shang.
The best chapter pointer here is Chapter 186, "The Goddess Who Can't Stand the Smell of Pig Manure". It opens with Seeing Wen Jiaojiao bravely entering the pigsty, Jiang Yan couldn't stay... and closes on And in the instant she fell, the red rope tied to Jiang Yan also broke,....
A practical answer is Chapter 192, because it turns the idea into a concrete scene. The chapter opens with Jiang Shixu had never imagined that Jiang Cheng, who had been so arrogant..., adds pressure through Let this incident pass, don't dwell on it and hurt yourself., and ends on Jiang Li.
A practical answer is Chapter 225, because it turns the idea into a concrete scene. The chapter opens with When Zhao Lang's devastatingly handsome face appeared, all six people..., adds pressure through Alright, it's about time, let's officially get started., and ends on Which big shot is.
A practical answer is Chapter 165, because it turns the idea into a concrete scene. The chapter opens with How come everyone else got a solid six points, and he ended up with just..., adds pressure through And this scene was fully witnessed by Zhao Lang from the second floor., and ends on Various.
The best chapter pointer here is Chapter 190, "Aren't We Friends?". It opens with Several people who didn't understand fell silent. and closes on Because he saw the pack of cigarettes pinched between Jiang Li's fingers..
Chapter 207 is the strongest chapter-level answer because it starts from After finishing, Sister-in-law Lan quickly took out the Good Evaluation... and follows through on She had taken care of them for a longer time, she hadn't even had lunch,....
Look to Chapter 179 for the clearest answer. It begins with Everyone originally had no expectations for the gifts that Su Yinwan..., keeps building through Although they felt there might be a catch, a few people still curiously..., and lands on I've been craving one for a long time!" Fans: ?.