A curious Japanese businessman, new to exploring his bisexual desires, finds himself alone in his office late at night. He hesitates, then decides to indulge in some private pleasure, pulling out a lifelike onahole designed to mimic the feel of a tight, wet vagina. He removes his fundoshi, his cock already half-hard at the thought of the toy. He lubes up and begins to masturbate, his strokes becoming more urgent as he imagines himself with another man. His breath comes in ragged gasps as he feels his climax approaching, and with a final thrust, he cums hard, his seed filling the onahole.