A Background Character Becomes the Male Lead’s Obsessive Target [Western Fantasy]

Wen Ling is bound to a passerby A System and becomes the guide who leads every darkened male lead down the path of face-slapping and godhood. In the Age of Humanity, light blankets the continent. Just as the young knight protagonist is about to be honored in the Holy Temple, his demonic bloodline is discovered and he is cast out. After enduring a series of betrayals, Wen Ling appears at just the right moment to help the protagonist escape the Holy Knights pursuing him and enter territory under the demons' control. "Half-beasts have an age that belongs to them, while demigods are condemned to slaughter." Before leaving, Wen Ling delivers this meaningful line, just as it appears in the original. His part in the plot should have ended there, but the protagonist grabs him by the wrist. "You. Come in with me." Wen Ling: "?!" Isn't this the protagonist's buddy's scene? What exactly went wrong? System: [The problem is that you read the narration aloud as your own dialogue.] Because of his mistake, Wen Ling is forced to fill in for the protagonist's buddy, mentor, elder, and more. After working around the clock for a long time, he finally escapes this world by faking his death. But just as he's about to enter the second world, an outside force breaks into the System's space. The protagonist, now the foremost Demon God, tears open a rift in space. His black clothes are stained with blood, and he grabs Wen Ling's wrist just as he did before, his eyes dark and deep. He says, "I found you." Wen Ling and the System freeze at the same time, not daring to move. System: [Since things have come this far, why not fill in as the harem, too?] Wen Ling: "!!!" No way! Thesis: Even when trapped in a difficult situation, never give up!