Break the Baloon (Kesshousui)

In "Break the Baloon (Kesshousui)," Misaki-chan endures intense physical agony from a malfunctioning internal balloon device, which swells, leaks fluid, and is manipulated by a possessive tormentor. Her mistress taunts and threatens her while Tokiko watches helplessly, unable to intervene as Misaki begs for mercy. The black-and-white bondage and femdom scene culminates when the device finally ruptures.