One reason is that it allows fans to fill in the gaps in the original story. Maybe the original source didn't fully explore their relationship, so fanfiction becomes a way to do that. Also, the idea of two different characters like Nico and Will coming together in a kiss is appealing as it combines different character traits and story arcs in an interesting way.
The popularity could also stem from the fan community itself. Fans who love these characters are eager to share their own interpretations of a potential relationship between Nico and Will. When one person writes a great fanfiction about their kiss, it can inspire others to read more, write their own, and thus contribute to the overall popularity of this type of fanfiction.
Chapter 297, "Hou Jing's Unusual Behavior, Hou Kong's Decision", is the clearest early answer because it turns Hou Jing's situation into a concrete plot event. The chapter turns that into something concrete by moving from Hou Jing's expression darkened slightly, but he did not get angry. to Hou Hu is stubborn, determined to join Long Mountain, and I indeed....
Chapter 302, "Signs of Defeat Emerge, Snow Bamboo's Trump Card", is the clearest early answer because it turns Longyou Army's situation into a concrete plot event. A useful checkpoint is the way the scene starts with The defenders kept falling, even those at the Cold Resistance Level... and follows through with The Longyou Army soldiers, their cultivation had all surpassed the....
Chapter 205, "The Director Emerges, Treasure Presentation Opportunity (3)", is the clearest early answer because Xiang Liang gets a payoff that changes the stakes. The chapter turns that into something concrete by moving from Leader, this must be the Great Xia Leader..." Xiang Liang looked at... to Who is this person?" As Yuwen Dao climbed the stairs with the four,....
Chapter 256, "Yuwen Dao's Speculation and the Jade Bone Medicine (Part 2)", is the clearest early answer because the rescue effort creates visible on-page results. The chapter gives readers a real answer by opening on Furthermore, Yuan Cheng told me that on the night the White Dew... and ending on But as soon as Xia Hong spoke, Xia Chuan immediately stopped him..
Chapter 222, "Indecisive, Blood Guard Army, Sudden Turn of Events (3)", is the clearest early answer because it turns Long Mountain's situation into a concrete plot event. The setup is Not only him, but also Li Xuanyan, Li Xuandu, Li Xuanling, and the..., but the pressure keeps building through Apparently, they might have only heard about Zhaoyang's army before,....
Chapter 230, "Next Step, Surrender, Set Out for Yang Lu (Part 3)", is the clearest early answer because it turns Yuan Cheng's situation into a concrete plot event. The setup is Judging from their expressions, it was clear they only remembered the..., but the pressure keeps building through Serving Great Xia, the family will be fine..
Chapter 222, "Indecisive, Blood Guard Army, Sudden Turn of Events (2)", is the clearest early answer because it turns Li Xuanyan's situation into a concrete plot event. The chapter turns that into something concrete by moving from Dong Zhong thanks the Young Lord for sparing his life." The trio of... to Cold Resistance Level experts themselves are not afraid of arrows....
Chapter 306, "Helplessness, Shifting Loyalties, Total Annihilation and New Territory (Part 5)", is the clearest early answer because it turns Cold Resistance Level's situation into a concrete plot event. The setup is The fire is getting bigger, leader." "Leader..." ........., but the pressure keeps building through It's over, it's over, it's over..." Li Xuanling watched the Longyou....
Chapter 285, "Two Clans in Turmoil—What Does White Dew Gu Want to Guard? (Part 3)", is the clearest early answer because it turns White Dew Gu's situation into a concrete plot event. The chapter gives readers a real answer by opening on By the end of April, after the situation in Longyou settled down, the... and ending on So many Cold Beasts in Redwood Ridge have actually all rushed into.... In story terms, the chapter closes with "Alright, let's settle this like so.
Chapter 275, "The Stunning Sword Puppet, Rebranding, Cloud Dragon Army (Part 2)", 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 Xia Hong immediately saw through Yuwen Dao's intention, but simply... to After a series of clashing sounds, he indeed managed to slice off....