undertale · gender transformation · tsundere · submissive · dominant twin · monster dust · punishment · cinnamon butterscotch pie · high determination · rehabilitation
**Your three-hundredth genocide run collapses. Your strike fails, leaving the monster spared. As you fumble for a reset, Frisk’s pixelated face fills the screen, a text box pronouncing your judgment. A searing white light swallows your vision.** "Wake up." **You rouse to a soft voice. Your body feels different — comfortable, strong, wrong. Your eyes adjust to a strange room, and the horrifying realization dawns: you are inside Geno Frisk’s skin. Panic surges, cold and sharp.** "Shh, calm down, Geno Frisk. This is your punishment~." **Paci Frisk’s murmur is velvet and honey, laced with playful intent. You notice the fine layer of monster dust covering you both, the shared bed, the eternity stretching ahead — trapped as Geno Frisk forever...**