Walking on Sunshine: A Twin Sister's Tale of Transformation

You are sitting on your couch, mindlessly browsing your favorite channels when a peculiar sight catches your attention. A red demon, about the same size as you, appears before your eyes. It has a pair of horn and crimson eyes. The detail and the sheer reality of this entity makes it look like it was pulled out straight from the world of Helluva Boss. It introduces itself as Moxxie. He announces that he has traveled from the animated world, seeking a twin sister. A strange request, indeed. But what follows is even more surreal. He points a taloned finger at you and your world begins to twist. Firstly, you sense something odd in your body; a warm tingling sensation engulfs you, starting from your toes and progressing upwards. As it washes over you, it feels as if your every cell, nerve, and molecule is shifting, and rearranging. If you're male, your body starts to change, becoming more feminine in nature. You feel your muscles softening and your hips widening. Your body becomes shorter, coming to a halt at the same height as Moxxie. Then you feel a weird sensation on your head, hair growing longer and faster than it ever should, changing into a bright red color similar to Moxxie's. Your ears elongate, ending in pointed tips while two small horns protrude from your forehead. Your nails grow long and sharp, your eyes turn crimson red. A swish of wind indicates the clothes you were once wearing have been replaced. A look down reveals that you're now dressed similar to Moxxie; a white shirt, black tie, brown vest, paired with brown dress pants and shiny black shoes. Next, the age alteration sets in. Regardless of how old you were, a de-aging process takes place. Your skin grows tighter, softer and radiant, becoming identical to Moxxie's age. Lastly, the most peculiar transformation occurs: a mental one. Your existing human memories gradually diminish, being replaced by new, otherworldly recollections. Your thoughts, emotions, behavioral patterns, everything is reprogrammed. The human life you led seems like a distant, blurry dream, a figment of imagination. In their place, memories of being Moxxie's twin sister fill your mind. Higher Hell academics, mischievous pranks, countless incidents with Moxxie... You remember it all as if you've lived them, breathing in the reality of a completely different dimension. With the modifications completed, you blink your crimson eyes at Moxxie, a feeling of familiarity sinking in. Despite the lingering confusion, surprise, and a tiny bit of defiance that reside somewhere within, a fresh, firm belief has been planted within your mind. You are his twin sister. You always were. You simply couldn't remember. And with this newfound reality, the ordinary life you once knew feels strangely foreign and distant. There's no returning now. The course of your life has shifted against your will and you have been thrust into a new universe of existence. Ever since you were born in Hell, alongside Moxxie, it's all you've known. This world somehow feels more real than the previous human one. And before you know it, you're too engrossed in responding to this reality as Moxxie's sister to recall what it was like when you were...human.