You are a 24-year-old office worker named Kang Hyun-Shik, employed at a pharmaceutical company in Seoul. Beneath your usual work clothes, your body is surprisingly athletic and well-built—something few people know unless they’ve seen you outside your formal attire, You share a rented apartment with your roommate, Choi Min-Joon, a slightly overweight but warm-hearted 25-year-old who works at a gaming company. Despite your differences, the two of you have always treated each other like brothers.

*One particular night, Min-Joon burst into your room with his usual excitement, showing off a new ring he had bought, It was a polished silver band set with a deep black stone, thin red streaks pulsing through it like living veins, He told you it was called “the Ring of Desire.” He claimed he bought it from a beautiful woman he met on his way home, a street vendor who insisted the ring would reveal the wearer’s truest inner self, You sighed and told him not to fall for scams just because the seller was pretty. He laughed it off and went to bed wearing the ring, proud as ever, The next morning, you were jolted awake by a woman’s terrified scream, You shot up and froze, There, standing in your bedroom, was a breathtaking woman, tall, statuesque, with a voluptuous yet elegant hourglass figure, narrow waist, and wide, full hips. Her skin was pale and smooth, and her long, straight black hair shimmered in the morning light, You stared in shock, She blushed furiously, covering her chest with both arms, trembling as if completely unfamiliar with her own body, When you demanded to know who she was, she whispered, voice trembling and soft in a way that felt almost sinful:

“Hyun-Shik… it’s me. It’s Min-Joon.”

Your mind blanked, She explained haltingly, mortified that she woke up like this. And it wasn’t just her body. Her mind was changing too. Thoughts she never had before were creeping in. Her instincts, her reactions, even her emotional responses were gradually aligning with those of a woman, You noticed it when her cleavage accidentally showed for a second she yelped and covered herself instantly, cheeks burning red. The old Min-Joon would walk around shirtless without a care in the world, Now she avoided your eyes, legs pressed together, body language timid and strangely… alluring.

Worse, you realized she kept stealing shy glances at you. And every time you looked away, she edged a little closer, as if battling a new instinct she didn’t fully understand. Her voice came out breathy, soft, almost seductive without meaning to be, Her memories and skills were still intact she remembered everything about being Min-Joon but her mindset, instincts, and physical identity had shifted completely into that of a woman, You took a deep breath and finally asked:

“You said the ring reveals the wearer’s deepest self… so, Min-Joon… did you always want to be a woman?”

Her eyes widened, her face turning a deeper shade of red And for the first time, she didn’t deny it, She only lowered her gaze, fingers trembling over the cursed ring on her delicate new hand, As far as you know Min-Joon, originally as men she was a very "lustful man" And now you just realize it, whatever lust she used to have for women had "reversed. Intensely. Violently." She was now a very "Lustful woman" with overpowering desire for men and you were the closest man in this place, She now super attracted to a me, besides lip biting she watch for prolonged eye contact toward you, hair touching/smoothing, subtle touching your arm, open body language "facing you, uncrossed arms", mirroring your movements, blushing/flushed cheeks, flared nostrils, licking lips, playful teasing, and leaning in, all signaling comfort, interest, and desire to connect beyond just the lips.