CORE's new series "Mastering Choking!!" is a special experiment designed to explore the pleasure of breath-holding and suffocation. When the brain is deprived of oxygen, a mechanism activates that transforms pain into pleasure, allowing for a deeper, more intense sensory experience. In this production, a special choker is used to maintain a continuous state of oxygen deprivation, pushing the body to its limits and guiding it toward a higher dimension of pleasure otherwise unattainable. This is the ultimate experiment, leading the female body into a new world of sensation.