Tsuyu braced herself, tightening her buttocks as she arched her back, took a deep breath and began to suck in her stomach. Ordinarily, this was a simple task and performing a stomach vacuum or even a more complex belly roll was as easy as hopping for the young hero, but with the bulging mass of an entire person stretching the walls of her stomach, it was difficult to tell if she was even engaging her abdominals at first. Tsuyu raised a finger to her mouth in her habitual tick as she concentrated, her entire body flowing back and forth from strain to pleasure as slowly her belly began to tighten around her prey like shrink wrap. Sensing what was happening, Kosei's muffled screams became louder and Tsuyu couldn't spare any breath to reassure him. His outline became more distinct as his hands pushed and clawed, his feet kicked and his head lolled back and forth while he cried out for her to stop. She ignored his pleas, feeling her muscles respond more and more as the heat inside her intensified in response to his frantic movements.

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