In some fanfictions, it could be related to power dynamics. Percy is often seen as a powerful and popular character. If he uses his influence or power in a wrong way towards Nico, like excluding him from a group activity or mission that Nico really wanted to be part of, it can be a reason for Nico to cry.
Chapter 220, "Difficult Journey, Yucheng's Ordeal, Li Xuanling 3", is the clearest early answer because it pushes Long Mountain into a new phase or setting. The chapter turns that into something concrete by moving from Cold Beast, could it be some kind of monster? to However, now that the ten families in Longyou are being influenced by....
Chapter 163, "Almost Annihilated, The Mystery of Gao Yu", 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 The Iron Refining Furnace's suppression on the deceitful monsters at... and follows through with He Yuanhun's strength was substantial, seeing Xia Hong fight him,....
Chapter 153, "The Terrifying Hue of the Dense Forest, The Shadow of Mirror Immortal Gu", is the clearest early answer because it turns Yi Blade's situation into a concrete plot event. The chapter turns that into something concrete by moving from Xia Hong's murderous intent was intense, not holding back in the... to As if confirming something, his face was instantly filled with....
Chapter 207, "Improving Corvée Labor and Changes in the First Year", is the clearest early answer because it turns Beast Blood's situation into a concrete plot event. It opens with Inside the main hall, more than a hundred people, and tens of... and closes on This is equivalent to seven times the original Mirror Immortal Camp..
Chapter 230, "Next Step, Surrender, Set Out for Yang Lu (Part 2)", is the clearest early answer because it turns Wu Tianxing's situation into a concrete plot event. The setup is Yuan Cheng and the other five were not foolish; they understood Yuwen..., but the pressure keeps building through After a moment of contemplation, they all nodded, clearly agreeing.... Once the chapter lands on Kneeling on the ground, Wu Tianxing was clearly caught off guard;
Chapter 208, "Great Xia Sacred Pattern, Building Upgrades (Part 3)", is the clearest early answer because Cold Element Festival finally turns buildup into a real advancement. It opens with The resources needed for the next upgrade of these buildings are not... and closes on Although the Cold Element Festival lasts fifteen days, the grand....
Chapter 262, "Garrison Candidates, Martial Arts Enthusiasm, and the Eve of a Breakthrough Tide (Part 2)", is the clearest early answer because Jade Bone Medicine finally turns buildup into a real advancement. The setup is He paused for a moment, then continued, "Defense Envoy, ultimately..., but the pressure keeps building through Among you nine, the three who obtain the most Contribution Value can....
Chapter 134, "Difficult Hunt [Warm Sun Tycoon Extra 3/10]", 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 Long defense will inevitably lead to loss, especially when mobility... and ending on The rest of the team stepped back a few steps, leaving Xia Chuan....
Chapter 134, "Difficult Hunt [Warm Sun Tycoon Extra 3/10]", is the clearest early answer because the buildup finally cashes out in a real clash. The setup is Although Xia Chuan and the others were also pursuing closely from..., but the pressure keeps building through Xia Hong turned around and shot an arrow again, then quickly turned....
Chapter 190, "Xia Li, 4 Articles, Someone is Coming", is the clearest early answer because it turns Contribution Value's situation into a concrete plot event. The chapter gives readers a real answer by opening on Xiao Ning was led through the crowd by her mother's hand, and as soon... and ending on Xia Li" All eyes unconsciously focused on Qiu Peng beside Xia Chuan,.... In story terms, the chapter closes with To be honest, he certainly wanted these things, especially the aged wine.