A rare, twisted older sister who joyfully accepts, with a smile, the usually repulsive act of having saliva splattered all over her hair, face, and entire body. Her name is Kuroki Ikumi. She revels in the thick, aged saliva of older men, her beauty consumed by filth, creating the most intensely erotic presence in the series. Even as she insults herself, calling herself "ugly," she pleads desperately to be shown even dirtier, more degraded sights—her sorrowful yet passionate desire igniting an irresistible craving for ultimate pleasure. Her world transforms seemingly unpleasant acts into something deeply beautiful and tender. Immerse yourself in this rare, captivating space, where her unique worldview and unwavering willpower enthrall all who witness it.