After Transmigrating into a Fanfic Where a Side Character Steals Characters' Personas

Li Yanchi, young master of the Sword Pavilion, was cold, aloof, and looked down on everyone. Born with a sword meridian and a clear sword heart, he crossed realms at seventeen to slay the great demon Zhuyin. At twenty, he became the foremost swordsman, the greatest in the Shangqing Realm. When he broke through the boundary, he cleaved open a path between heaven and earth with one sword, but a force from beyond the heavens dragged him into another world. In this world, the one born with a sword meridian who slew Zhuyin was his junior disciple, Pei Qian. His master indulged Pei Qian in everything and never refused him. His sworn enemy treated only Pei Qian as special, declaring, "All I've ever wanted is to cross swords with Pei Qian once." Even the qilin he had formed a bond with recognized Pei Qian as its master, pestering him to stay by its side. The people who had once been connected to him now had eyes only for Pei Qian. They held Pei Qian in their palms, treasuring him above all else. But they treated Li Yanchi differently, ignoring him, acting coldly, despising him, and looking down on him. Having lived a second life, Li Yanchi cared only for cultivating the sword and had long grown tired of those people's incessant entanglements. Now they no longer clung to him. Instead, they followed behind him full of resentment, and Li Yanchi found it a relief. As for the opportunities and fortunes his junior disciple had stolen, so long as he still had a sword in hand, what did he have to worry about? But later... Li Yanchi planted his foot on Pei Qian's chest. The other man, still not knowing when to give up, grabbed his ankle. Li Yanchi frowned in disgust. "Isn't this a world created for you? So why have they, and you, still come crawling after me like dogs?" - Mu Wenzheng, the last true dragon in the world, was sealed beneath the Pool of Eight Sufferings. A vague heavenly will had warned him: Only Pei Qian could redeem him. He was destined to live only for Pei Qian. But he refused to believe in fate, refused to accept it. "So what if the Heavenly Dao strikes back?" The man laughed wildly and wickedly. "I, Mu Wenzheng, love only Li Yanchi." "If the Heavenly Dao forbids it, I'll destroy the Heavenly Dao!" - [In plain language] After the protagonist transmigrates into a fanfic centered on a supporting character, his character, admirers, spotlight moments, and strength are all stolen. He is turned into a supporting character's simp, and his own admirers become that supporting character's simps too. But the protagonist still becomes the strongest, one step at a time. Everyone awakens, realizes their mistakes, and pays the price. The protagonist and the original character created for the fanfic end up together, living happily ever after. That's the story. Theme: What is meant to be yours will eventually be yours.