After I Coaxed My Nemesis into Becoming a Stand-In Demon Lord

[Screenshot dated 2021/05/31] [Completed. Please give it five stars (bows.JPG)] Sheng Huaizhao transmigrates into a book and becomes the destined nemesis of the protagonist, a sword immortal, as well as the future demon lord who will be killed by a single sword thrust. On the first day after transmigrating into a book, he meets the protagonist, his nemesis. The protagonist is still a boy. After failing his tribulation, his spiritual core has been completely shattered. To save his own life, Sheng Huaizhao makes a major decision: He gives the boy his own demon core and coaxes him into becoming the future demon lord. As for himself, he uses his shattered spiritual core to keep himself alive and settles in as a contented slacker. When the boy wakes, Sheng Huaizhao gasps weakly, “Little husband, you’re finally awake.” The frail boy stares intently at him. Sheng Huaizhao: “You’ve devoted yourself to the demonic path, and I was gravely injured protecting you…” After a long silence, the boy takes his hand. “All right. I’ll protect you.” Sheng Huaizhao, finally free of suffering: “Uh-huh, sure.” Settling into slacker mode.JPG * The boy is exceptionally gifted and takes to cultivating the demonic path with ease. Except… By day, he’s a timid crybaby who needs three candied hawthorns to cheer him up. By night, he’s a cold, merciless iceberg who won’t even let Sheng Huaizhao onto the bed. Sheng Huaizhao: “So failing your tribulation gave you a split personality?” The original story’s sword prodigy is trained by Sheng Huaizhao into a demon lord who shakes the world. On the day the three realms launch their campaign against him, Sheng Huaizhao vanishes without a trace. Three major events take place that day: The demon lord is invincible and unites the three realms. The demon lord is abandoned by the one he loves and completely loses his mind. The demon lord vows to kill the heartless man who betrayed him. * Sheng Huaizhao, the “heartless man,” didn’t disappear on purpose. His shattered spiritual core is restored, and overnight he ascends to immortality, becoming the new sword immortal. Somehow, he’s become the protagonist’s nemesis all over again. Damn it. After he’s dragged back, Sheng Huaizhao raises his sword: “Greetings, Your Demonic Majesty. I’ll kill myself right now, so you don’t have to bother!” His subordinates watch eagerly. But the young demon lord instead brings out a child who looks about seventy percent like the sword immortal, his beautiful eyes full of grievance. “When your daddy loved me, he called me ‘little husband.’ Now he calls me ‘Your Demonic Majesty.’” Subordinates: !!! Sheng Huaizhao: …Where did this kid come from? Reading guide: [My take on immortal cultivation, with a mountain of original worldbuilding] [The shou doesn’t give birth, but the child is biologically related to both the gong and the shou~] Theme: Face all kinds of difficulties in life with a positive attitude.