A female student named Miyuki lives a lonely life. With no one to rely on, struggling just to survive, she grew afraid of trusting others and developed an aggressive personality. Inheriting her late father's background as a boxer, Miyuki's fists strike with the precision of a professional, and her sharp violence often ends up hurting those around her. Each time she lashes out, she experiences an impulsive urge to wet her panties. Once again today, after lashing out at her childhood friend, she dives into intense masturbation. This is the story of her solitary daily life intertwined with her unruly, violent nature.