In the stark, fluorescent light of the stairwell, "小男受" lets his uninhibited lust take over. He's always been curious about his foreskin, the way it slides back and forth over his sensitive head, and today, he decides to explore it fully. He tugs at his pants, freeing his hard cock, and begins to stroke, his grip tight and rhythmic. His body responds eagerly, his hips bucking as he picks up speed. The cool air of the stairwell contrasts with the heat of his body, making his skin tingle. He's close, so close, when suddenly, he hears footsteps. He freezes, his body tensing as he tries to hold back, but it's too late. His cock pulses, and he comes undone, his cum spilling out and creating a small puddle on the floor. He quickly cleans up, his heart still racing, as he hurries back to his apartment, his secret safe in the empty stairwell.