Lin Yu recovered his memories in Yundu, found Lin Zhao at the Small World’s core, and crossed into the Mirror World to search for Li Nian’s soul. After infiltrating the Hero Training Center with Feng Tong, he entered a ruined Small World and encountered a colossal creature that mistook him for Lin Zhao.
Lin Yu outmaneuvered the Central Mechanism, recovered Li Nian, and entered a supposed reward instance that proved to be a trap within the Gray Domain. There, Xia Yue revealed her plan to erase Li Nian and strand Lin Yu, but Lin Yu used the Death game's rules to turn the confrontation around.
Lin Yu returned from the Gray Domain, uncovered the Copper Furnace’s secrets, and prepared for his Tier 3 trial. In the Black Marsh World, he joined Qianhuan to protect the Tanuki people and disrupt Xia Jin’s invasion, then planned a direct attack on soldiers adapting to their mirror labyrinth.
Lin Yu and Qianhuan helped the Tanuki Tribe resist Xia Jin’s army, while Lin Yu clashed with Zuo Xi and escaped to scout the Northern Royal Palace. There he uncovered She She’s coup and watched the Northern King face his former student in a duel.
After She She took power, Lin Yu failed to secure a safe place among the established factions and turned to building a force of Half-Demons. As the war converged on the Wolf Tribe Sacred Land, he waited for the Players and Xiajin’s forces to create an opening for his plan.
Lin Yu manipulated the war across Sanqiu and Xia Jin, gained Lu Gu’s trust, and awakened the Ancient Notebook’s power. The notebook drew five Players into a reconstructed school where they learned of Copper Furnace and began tracking missing students underground.
After escaping the memory illusion, Lin Yu led the Half-Demons to victory and began pursuing his Exclusive Item and the truth behind Fu Luo’s murder. He used the Ancient Notebook to reconstruct the Players’ memories, uncovering their pasts and resolving to approach Zuo Xi as Meng Yang.
Lin Yu created independent Information Lifeforms and allied with Bai You against her original self, Fluoxetine. He gathered intelligence on threats surrounding the South China election before Fluoxetine's airport appearance led him to investigate whether Lu Xi had been targeted.
Lin Yu manipulated White Sand and Potassium Chloride into a deadly encounter with Hershakanus while the Psychology Society launched its assault on the Forum server. The attack reached the server array, where Robin summoned Shura Hell to drag Fluoxetine into the abyss.
Lin Yu survived a lethal confrontation aboard a plane, deceived Fluoxetine in a dream, and learned that the Forum’s servers had been damaged. In Shenzhen, he navigated Order’s suspicions and concluded that a hidden organization was working to discredit them as they closed in on it.
Lin Yu used his Arthur identity to win support for restarting the Fear Project while investigating Sherlock’s murder and the people behind it. After Huo Le weighed the plan’s risks and potential, she agreed it was worth trying and Lin Yu proposed approaching Huo Shu together.
Lin Yu gained Nightless Sky Yong Lian’s permission to restart the Fear Project and helped restore Fu Luo from his Soul Fragments. He joined forces with Huo Ming to investigate Fu Luo’s murder in the Great Wilderness, then summoned Freud from the Ancient Notebook.
Lin Yu joined Nightless Sky Huo Ming’s expedition into the Great Wilderness, where an ambush and the discovery of a soul-tracking device tied the danger to Fu Luo’s past. By following memories of Gao Shan and Fu Luo, Lin Yu’s group reached the place where Gao Shan had died and uncovered hundreds of activated corpses.
Lin Yu survived the corpse-puppet ambush and the destruction of Nightless Sky Huo Ming’s outpost, then infiltrated the Sky King and defeated Qiu Xinli to uncover the Autumn Family’s alliance with an Otherworlder. Back in Shenzhen, he learned the Order planned to secretly prevent a leading candidate from winning the presidential election.
Lin Yu infiltrated the Marauders and Psychology Society while gathering intelligence for Order and the Freedom Alliance ahead of the Shenzhen election. He agreed to help Jian Cunyi ambush the Diviner and received research into the Diviner’s abilities, though the Diviner’s Exclusive item and Heart Domain remained unknown.
Lin Yu and the Order prepared for the Marauders’ planned attack while navigating the presidential election and investigating the murders of Iced Americano and his campaign team. The investigation exposed a disguised soul-wielding assassin inside the convention center, where Lin Yu, Zao, Jue, Good Night, and Ren Gu confronted the attacker.
As the Benevolent King’s election began, Lin Yu investigated Schreiber’s apparent attack, Shang Gen’s ties to the Psychology Society, and the candidates’ hidden alliances. He manipulated several people and let Zuo Xi conclude that he was Schreiber, then grew alarmed when Paper Kite disappeared and a gunshot rang out.
After Paper Kite fled and the election began, Lin Yu pursued his own plans while the Benevolent King prepared to ascend and the Director faced the God Creation Project. Lin Yu entered the Eternal Prison for a special Trial, learned its rules from Mans, and began seeking a way forward among its prisoners.
Lin Yu negotiated with the imprisoned elves, crossed into the Middle Ring, and met Cheng Shuang’s group while concealing his true motives. As plans formed to seize unclaimed Authorities, outside forces also began preparing to enter the Eternal Prison.
Lin Yu and Cheng Shuang crossed the chaotic Eternal Prison, where Lin Yu won a duel against Kong Han and learned more about the Sword of Judgment and the Poetry Flower. They found the Drama Authority in a movie theater, but the God of Frost revealed herself and pursued Lin Yu as a newborn Authority shook her prison.