Since I haven't read 'The Long Vacation' by Manuel Arguilla thoroughly, it's hard to name the exact main characters. However, it's likely that the main characters are those who are directly involved in the events during the long vacation. They might be travellers who are exploring new places, having different experiences, and interacting with each other and the local environment.
I'm not sure exactly who the main characters are without reading the story in detail, but they could be people on vacation, perhaps a family or a group of friends.
Not having read the story myself, I can only speculate. But generally in a story about a long vacation, the main characters could be vacationers. They could be individuals with different personalities and backgrounds coming together for this long break. There might be a protagonist who is at the center of the story's events, perhaps a young person seeking adventure during the vacation, or an older person looking for peace and relaxation. And there could be supporting characters like fellow travellers, locals they meet, or family members accompanying them on this long vacation journey.
Chapter 185, "New Home, Land, Arrow Bamboo Forest", 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 And the grand golden chair on the high platform added a touch of... and follows through with Therefore, the allocation method will not change!.
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. The chapter turns that into something concrete by moving from Population really is the cornerstone!" In the back of the main hall,... to As for the army matter, that's even more wishful thinking..." Xia....
Chapter 232, "Saving Lives, Putting on an Act, Xia City in Uproar [8,000-Word Chapter, More to Come]", is the clearest early answer because it pushes Peng Bo into a new phase or setting. The setup is Five against two, a fierce battle reignited., but the pressure keeps building through Brother, could you hand over the three children to me first?"....
Chapter 179, "Tigers Fall, Witnessing and Floral Heart [Happy New Year]", is the clearest early answer because it turns Xia Chuan's situation into a concrete plot event. The chapter turns that into something concrete by moving from These beasts, they have completely lost people's hearts. to Seated on the chair, Xia Chuan turned his head to look at Liu Erhu....
Chapter 250, "Rescue, Intimidation, and Surprise (Part 2)", is the clearest early answer because it turns Long Mountain's situation into a concrete plot event. The chapter gives readers a real answer by opening on Those people in light gold armor have been using solidified fire oil... and ending on That thing can actually eliminate dew, it's amazing!" Among the three....
Chapter 243, "Hanqiong's Great Battle, Realization After the Fact (Part 2)", 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 Xia Hong surveyed the houses inside Hanqiong Station, marveling at... to There's an enemy attack, hide quickly." "It's real, someone's....
Chapter 185, "New Home, Land, Arrow Bamboo Forest", is the clearest early answer because the buildup finally cashes out in a real clash. The chapter gives readers a real answer by opening on And the grand golden chair on the high platform added a touch of... and ending on Anyone who came in saw Xia Chuan standing above the second-floor....
Chapter 200, "Xu An, Ten Thousand Urgent, Presenting Treasure", is the clearest early answer because Great Xia gets a payoff that changes the stakes. The chapter gives readers a real answer by opening on First Year of Great Xia, December 29 North slope of Five Ape... and ending on Hearing the discussion among the team members, Xu An shook his head,.... In story terms, the chapter closes with Reasonably distributing Contribution Values; controlling the frequency of outings;
Chapter 292, "White Dew Gu's Open Plot, Long Mountain Advances", is the clearest early answer because Li Tiancheng finally turns buildup into a real advancement. The setup is Over an hour ago, Li Tiancheng described to them everything he had..., but the pressure keeps building through A total of ten kilometers of black stone walls on three sides; Xia....
Chapter 235, "The Might of the Longyou Army, Yang Lu's Desperate Plight", is the clearest early answer because it turns Wu Ying's situation into a concrete plot event. The chapter gives readers a real answer by opening on On the night of April 14, Xia Hong indeed personally witnessed the... and ending on First take some interest for He Tu, die!" Li Xuantiang's voice was....