The grand finale “アイプチ 仕組み” features a woman in elegant black gloves and nothing else, performing on a grand piano. She straddles the bench in “アイプチ 仕組み”, rubbing her bare pussy against the cool wood at first, then producing a sleek metal dildo. In “アイプチ 仕組み”, she sucks it suggestively before sliding it deep, gloved hands working her clit simultaneously. Every thrust in “アイプチ 仕組み” makes the piano keys chime accidentally, adding a erotic symphony. Her breasts heave in “アイプチ 仕組み” as she nears the edge, pinching her nipples hard. The climax of “アイプチ 仕組み” is operatic—she cums with a wail that could shatter glass, body convulsing atop the instrument, creamy release coating the dildo. “アイプチ 仕組み” ends with her licking it clean while staring into the camera, whispering that “アイプチ 仕組み” was composed just for you.