Kei, a beautiful high school girl who spends her days busy as an idol during the day, transforms into K, the idol of justice who secretly judges the evils of the dark society at night! This time the target is a yakuza wakagashira assistant. I can't forgive the villainous yakuza who make high school girls addicted to drugs, force them into prostitution, and then force them to commit suicide. However, the opponent is a beast that does not have a decent human heart. How will Kei face this heinous target? An idol and a punisher, depicting the deadly struggle of the world's busiest high school girl who wears two completely different pairs of straw sandals!!