Another way could be through the use of enchanted objects. Maybe there's a special amulet or talisman that has the power to ward off Dementors. The characters would need to find out about this object, and there could be a whole adventure around obtaining it, like a race against other dark wizards who also want to use it for their own evil purposes.
Some fanfiction might explore the idea of using ancient magic. There could be a forgotten spell or incantation that has the power to repel Dementors. Characters would have to go on a quest to find this magic, perhaps in an old, hidden library or from a reclusive wizard who knows the secrets of the past.
Chapter 193, "The Army, The Beast Tide, Little Snow Mane", is the clearest early answer because it turns Xia Chuan's situation into a concrete plot event. The setup is Soon, some people from the former Mirror Immortal Camp spoke up to..., but the pressure keeps building through Upon learning that the Cold Beasts wouldn't come to the valley,....
Chapter 137, "Attempt to Breakthrough, Dispute [Trinity]", is the clearest early answer because Intermediate Cold Beasts finally turns buildup into a real advancement. The chapter turns that into something concrete by moving from After listening to He Gang and He Meng, Yuwen Dao, who had been calm,... to Dao'er did well tonight, leading a team to hunt two Intermediate Cold....
Chapter 193, "The Army, The Beast Tide, Little Snow Mane", is the clearest early answer because it turns Xia Hong's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Population really is the cornerstone!" In the back of the main hall,... and follows through with Those Cold Beasts are all headed into the Arrow Bamboo Forest and....
Chapter 138, "Mirror Immortal Strange, Cold Resistance Level? [3-in-1]", is the clearest early answer because Deceitful Monster finally turns buildup into a real advancement. Early on, When we just merged, the temperaments of the brothers He Meng and He.... By the end, When everyone in the camp truly accepts the Mirror Immortal, even....
Chapter 189, "The Provoked Xiao Hen, New House, Xia Li", is the clearest early answer because it turns Great Xia's situation into a concrete plot event. The chapter turns that into something concrete by moving from The First Year of the Great Xia, Fifth day of the fifth month "A new... to Especially in recent days, with father and Uncle Yuan spending....
Chapter 112, "Is It Real or Fake?", is the clearest early answer because it turns Chen Ying's situation into a concrete plot event. The chapter gives readers a real answer by opening on With previous battle experience, leading the encirclement this time,... and ending on Xia Chuan and Luo Yuan followed closely behind..
Chapter 196, "Sword Puppet, the First Intermediate Squad", is the clearest early answer because it turns Xia Chuan's situation into a concrete plot event. Early on, First Year of Great Xia, May 20th Redwood Ridge, three kilometers.... By the end, Countless Iron Arrows suddenly attacked from all directions,.... Inside the broader battle storyline, the chapter closes with The light golden exterior of the Thunder Kui provides strong defense;
Chapter 75, "Changing the Rules for Meat Distribution After Amendment", is the clearest early answer because it turns Cold Beast's situation into a concrete plot event. The chapter turns that into something concrete by moving from The Da Shi Camp has already been destroyed, and the 500-meter area... to Xia Hong turned to look at him and Yuan Cheng without answering,....
Chapter 136, "He Yuanhun, Yuwen Hu, Yuwen Dao (Three in One)", is the clearest early answer because it turns Xia Hong's situation into a concrete plot event. The setup is Leader Xia Hong!" Soon, Yuwen Dao tossed over the sealed bag of Cold..., but the pressure keeps building through Xia Hong reached out and caught it steadily, estimating it to be....
Chapter 134, "The Difficult Hunt [Warm Sun Titan adds more 3/10]", is the clearest early answer because the buildup finally cashes out in a real clash. A useful checkpoint is the way the scene starts with When the torch ignited, the huge creature, a hundred meters away, did... and follows through with The terrifying counterforce threw Xia Hong's body six or seven meters....