"Soulful Consumption: Mahito's Sinister Experiment"

Prompt: As Alex, a teenage hikikomori to the bones, sat in the familiar dimness of his room, the glow of Jujutsu Kaisen anime illuminating his face, his life suddenly flickered out. The scene he was absorbed in featured a fierce battle between sorcerers and cursed spirits, and like an ironic flash, it was the last thing his eyes registered before he ceased to exist in the world he knew. The world he awakened in was markedly different from his usual confinement, but there was an eerie resemblance. He was still in a room, though this one was sadder and more lonesome - apparently abandoned. He tried to inspect the cryptic gloom around him, but he couldn’t move as he used to. He felt more like a smoky presence, a legion of negative energy. Looking at a shabby, dull mirror, he saw his reflection, his new form—a weak cursed spirit. Before he could reconcile with this strange reality, the far-end door creaked open, and a girl stepped in. Her petite figure betrayed her fiery eyes that glowed under her short, honeyed hair. Her face bore an element of determination camouflaging her youthful vigor, her cheeks lightly graced by freckles. She was dressed in a black high-school uniform with a fitting waistcoat, buttoned up high. A ribbon was tied primly around her neck, the ends dangling over her chest, and a skirt cascading to her knees. Her legs were clad in black socks reaching up to her knees, and sturdy brown shoes adorned her feet. This was Nobara Kugisaki, the female protagonist from Jujutsu Kaisen, Alex realized, his heart pounding. He had seen that fierce expression countless times on his screen, but seeing it aimed at him was an entirely different terror. Without wasting a moment, she snapped her hand in her pocket. To his horror, she pulled out the distinctive hammer and nails, her tool of choice to purge cursed spirits. She held the hammer firmly in her grip, a sense of resolve flashing in her eyes, mirroring the bold spirit he'd admired in the series. The golden-head nail glistened ominously under the weak light, appearing lethal as it was intended to be. As Alex watched Nobara in abject horror, she moved swiftly like a predator closing in on its prey. Her oceanic eyes met his form, and without hesitation, she raised the hammer high above her head. Alex felt a cold paralyzing fear grip him. He instinctively tried to dodge; however, his new body was awkward, unresponsive to his will. His six amorphous limbs shivered like water disturbed by a pebble. Nobara's grip tightened on the hammer handle, her knuckles white under the strain. She drove the nail into what seemed to be one of his arms—an ethereal limb of shadows and smoke that now resembled a mutilated purple human limb. The nail pierced his incorporeal flesh as if it were butter, making Alex howl in pain, a screech that echoed eerily around the abandoned room. Concentrated cursed energy surged from her palm and into the hammer, creating a visible glow that traveled along the length of the nail into Alex's form. He felt the energy spread within him, tearing him apart from the inside, as she prepared to finish him off with her signature Cursed Technique. His agonizing cries crescendoed, the sound warping the air around them. Just as Nobara prepared to channel the finale of her technique, a presence made itself known. Out of thin air, Mahito materialized behind the hunter, his gray eyes gleaming ominously. Without warning, his hand landed on Nobara's shoulder, immediately activating his Cursed Technique - the Idol Transfiguration. The very atoms around them seemed to shiver. A distorted hush swept across the room, as if the world held its breath. His touch was like an insidious caress of death skimming her skin, darting in an unseen dance that was feared by even the most formidable sorcerers. It manipulated the very soul, contorting and reshaping it into grotesque forms that belied the laws of reality. Describe how Mahito suddenly realized that Alex, who had become a cursed spirit, had a human soul. This interested him. Then he, still holding No bara by the shoulder so that she would not move, came closer to the cursed spirit and put his hand on it. Immediately, he transformed it, making it smooth and smaller so that it could easily fit into Nobara's mouth so that she could swallow it. Then Mahito, with a terrifying smile, opened Nobara's mouth and stuffed Alex into it, and then pushed him further down her throat.