Ookii Mukimuki Chiisai Muchimuchi

Kataoka is a young man whose entire life revolves around a single pursuit: muscle. Day after day, he throws himself into punishing training sessions, sculpting his body with the unwavering discipline of a true devotee of strength. For him, the gym is more than just a place to work out—it is a sanctuary where every rep and every drop of sweat carries him closer to his ideal physique. Within this familiar world, one person has become impossible for him to ignore. Shiina, a member of the gym's staff, has captured his attention so completely that he finds himself stealing glances whenever she is near. Yet the reason for his fixation is not what anyone might expect. It is not her figure or her feminine charm that holds him spellbound. No—what truly fascinates Kataoka is Shiina's soft, pleasantly rounded belly. To a man who has spent years hardening every inch of his body, that gentle softness is utterly mesmerizing. Now he finds himself caught in an unexpected predicament: the iron-willed champion of muscle has become hopelessly captivated by the very opposite of everything he trains so hard for.