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Ultimate Erotic Monitor Investigation Team: Capture the Busty Slender Beauty! Who's the JAV actress in this video? Amateur? Name revealed!

For the fifth study conducted by Ero Research Institute, the theme "Is it true that big-titted women suffer from stiff shoulders more easily?" was investigated. To carry out this research, volunteers were recruited, and random amateur girls passing by became targets for pranks. In this project, a hospital was rented out entirely, and serious-looking researchers were deployed—but in reality, absurd pranks unfolded one after another. Thanks to the lab coats and hospital equipment, the amateur big-titted girls let their guard down completely, participating in a totally defenseless state. As a result, the shaking of their large breasts triggered a "massive earthquake." The humorous interplay between ridiculous pranks and the genuine, pure reactions of amateurs is a must-see!