Kekko Kamen (1991)

Original title: けっこう仮面

No, that's not a skin-tight pink costume - it's her skin! She's Kekko Kamen, the dynamic denuded damsel who fights injustice in the altogether. Her mission? To expose rampant classroom corruption at the Big Toenail of Satan's Spartan Institute of Higher Education - all while repeatedly rescuing everyone's favorite victim, the beautiful (and often naked) Mayumi Takahashi, from the Institute's terrifying torture chamber!