In a dimly lit, steam-filled gym, a non-kei Japanese hunk, his body adorned with intricate tattoos, pushes his limits in a brutal ab workout. Each crunch, each twist, each flex of his washboard stomach sends waves of pleasure-pain coursing through his veins. His breath ragged, his skin slick with perspiration, he drives himself to the edge, his body a symphony of aching muscles and pounding heart, all for the sweet reward of a job well done.