Well, in 'Harry Potter goes dark fanfiction', a common concept is the alteration of the wizarding world's power structure. Maybe Voldemort wins in a different way and Harry has to survive in a much harsher, more tyrannical regime. Or perhaps Harry himself becomes a sort of anti - hero, using the dark side of magic to fight against what he perceives as a greater evil, even if it means sacrificing some of his principles. And there could be the idea of dark magical creatures being used as weapons instead of just threats in the background.
Some concepts in 'Harry Potter goes dark fanfiction' include a reimagining of the prophecy. Instead of being the chosen one to defeat Voldemort, Harry could be fated to bring about a new era of darkness. This could lead to a whole new set of alliances and enmities. Also, the idea of the Sorting Hat making different choices. For instance, Harry could be sorted into Slytherin and be influenced by the more ambitious and sometimes darker values of that house. And the Forbidden Forest could become a much more dangerous and actively malevolent place in these darker interpretations.
Chapter 230, "Next Step, Surrender, Set Out for Yang Lu (Part 3)", is the clearest early answer because it turns Hong Tian's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Judging from their expressions, it was clear they only remembered the... and follows through with Yang Lu's base is at Yangyuan Peak, located at....
Chapter 252, "A Thousand Gold for a Steed’s Bones, Yang Li Surrenders", is the clearest early answer because it turns Qiu Peng's situation into a concrete plot event. The chapter turns that into something concrete by moving from Li Hu peered inside and saw the crimson blood in the bag. to He looked up at Xia Chuan..
Chapter 188, "Venting, Drawing Lines, Preparing", is the clearest early answer because it turns Xia Hong's situation into a concrete plot event. Early on, What happened at the Mirror Immortal Camp?" Just a moment ago, it was.... By the end, Leader!" "The leader is here." "Greetings, leader!" ....
Chapter 178, "Reciprocity Society and the Generous Gesture", is the clearest early answer because it pushes Contribution Value into a new phase or setting. The setup is Shi Ping, what does the chief want with so many things?" On the south..., but the pressure keeps building through A thousand pounds of iron ore, three longswords, and a set of....
Chapter 206, "Pleas, Cold Element Festival, the Leader Emerges", is the clearest early answer because it turns Lin Kai's situation into a concrete plot event. It opens with Xiang Liang stepped into the silent hall, hearing only the echo of... and closes on As Xia Chuan and the others approached to look, all five were....
Chapter 267, "Stunned, the Astonishing Zhao Yuankong", is the clearest early answer because it turns Strong Bows's situation into a concrete plot event. The setup is It's not just Xiao Hen who thinks this way., but the pressure keeps building through Liu Peng, all members of group 52, and most people in the square, are.... Once the chapter lands on After scattering the crowd, it remained agile;
Chapter 247, "Immortal Wu Xiong, Surrender", is the clearest early answer because it turns Cold Resistance Level's situation into a concrete plot event. The setup is it hurts, help me, help me!" "Ahhhh...… save me!" "Wuwuwu, save me!"..., but the pressure keeps building through Jiejiejie......" From the four wooden houses engulfed in blue flames....
Chapter 178, "Reciprocal Meeting and Big Moves", is the clearest early answer because it turns Xiao Ning's situation into a concrete plot event. A useful checkpoint is the way the scene starts with That's true, after all, Xia Chuan was just a passing acquaintance. and follows through with As he approached, he signaled Shi Ping and the others beside him to....
Chapter 306, "Rebel Collaborators, Chaos and Opportunism, Long Mountain Changes Hands", is the clearest early answer because it turns Xia Hong's situation into a concrete plot event. Early on, Xia Hong's expedition to the north never intended to capture Long.... By the end, In other words, without those three thousand rebels, the.... Inside the broader family politics storyline, the chapter closes with "What hope? That Golden Armor Army from Great Xia hasn't moved yet;
Chapter 201, "Wuyuan Garrison, Cold Marrow Iron", is the clearest early answer because the buildup finally cashes out in a real clash. The chapter turns that into something concrete by moving from Because as he spoke, he was constantly observing the reaction of that... to Yes, hadn't the Great Xia Leader just said he knew his father?.