In the private confines of his room, an otokonoko, a Japanese transgender man, indulges in a nipple-focused masturbation session. He starts by gently pinching and rolling his erect nipples, moaning softly as waves of pleasure course through his body. His strokes become firmer, more insistent, as he works himself into a frenzy, the only sounds in the room his heavy breathing and the occasional wet smack of his lips.