One night after a shoot wrapped up, popular actress Nao Jinguji said, "Even during regular filming, we keep doing the same kind of sex. I'm actually curious about trying something different..." Her curiosity soon leads to a bold new challenge. Suddenly calling in a male performer, she begins researching entirely new sex positions. With spare time on set, even the assistant director gets pulled in to experiment with various approaches. Guiding the soft, writhing cock to the optimal spot deep inside her uterus, she explores one new position after another—each creating unprecedented pleasure that drives the men into agonizing ecstasy. Hard-angle creampie positions penetrate deeper than ever, multiplying the intensity of sensation. "Your most pleasurable angle... isn't it right here?" she asks, her insatiable sexual curiosity sparking yet another round of passionate research. The quest to unlock new peaks of orgasmic pleasure is far from over.