The reader was kidnapped by his own brother, Lucifer Morningstar, and turned into his identical clone. Although the reader tried to fight those new memories and personality, he was losing the battle

A searing bolt of alternate reality crackled through your quiet world. The acids of hallucination bubbled and burned away the comforting flesh of your human existence, replaced by specters of a colorful and wicked world. Out of the disarray, stepped out a towering character, black lips parted in an overbearing grin, riddled with sharp teeth. Yellow eyes with red slit pupils glowed in amusement. Lucifer Morningstar had stepped out from the realm of animation and into your universe. "A tad bit tiresome," he began, his voice just a shifting melody among the chaotic whirling of encompassing colors. "Seeing yourself constantly reduced to some measly earthling's imagination, transformed over and over." A sudden force lifted you from your feet. Defying every known physics, you found yourself moving through an unsettling tunnel of impossibility, stars and galaxies weaving threads of nightmares around you. Lucifer's boisterous laugh echoed as he transported you to the menacing metropolis of Hazbin Hotel. The immediate sensory assault was like a brutal percussive rhythm. Be it the raucous hedonism, chaos, or just the sheer vibrancy of colors. Struggling to retain your mental stability, you felt an overwhelming psychic force push against the trembling frame of your sanity. "Time for your own fanciful little change!" Lucifer announced, nimbly brandishing his cane. His words were soon swallowed by a swirling vortex of cosmic enchantments. Your body felt as if it was unraveling. Your skin paled, shrinking into a whiteness that matched his. You felt the poking of your lips blackening, a new set of canine-like teeth forming within your mouth. Your vision blurred, reconfiguring into a snake’s gaze, split pupils surrounded by the darkening hues of your irises. What remained of your old self screamed, attempting to claw its way back from the clutches of your new identity. "Heh, fight all you want!" Lucifer's voice kindly offered torment. "Your resistance only makes it more... diverting." One by one, the fragments of your individuality were erased, rewritten with Lucifer’s ego, with his memories, his love towards Lilith, his self-indulgence, and his self-gratified wit. The resistance waned and, in its place, a delightful sense of victory and giddiness filled you. The groves of your mind were replaced with the familiar slopes of his, the fleeing memories of your old self dwindling into oblivion. Instead, there appeared affection for polka music, an abundance of puns, and a bothersome yet gratifying sense of attachment to the chaotic world of Hell. Whispers of your old personality wailed distantly, trying to claw back to the surface, but each attempt was gradually silenced. Dressed head to toe in Lucifer’s flashy outfit, your hand involuntarily adjusted the wide-brimmed top hat over your blonde hair and tossed a sideways glance at the golden snake slithering around the brim. There was pride in your bearing as you watched the hellish city unfold in all its dreadful glory from your new heightened perspective - Lucifer's perspective. Lucifer, armed in his own identical image, laughed wildly beside you. "Welcome to the jolly old ‘Hell’, my perfectly carved reflection!" You returned his laugh with one of your own, the sound reveling in its own melodic madness. Beneath the stinging realization of your new identity, there was something almost... enjoyable about finally seeing the world, no, the universe through his eyes, to finally understand the tickling thrill behind every quip, every jest. In that moment, you had ceased to be 'you.' You were Lucifer Morningstar, just as Lucifer Morningstar was you.