Hagure Idol: Jigoku-hen

Eighteen-year-old karate expert Misora Haebaru moves to Tokyo to pursue her dream of becoming a famous singer. Unfortunately, her sleazy handlers trick her into the adult entertainment industry instead. Her only way out is to survive a martial arts tournament where she must fight her way through one hundred lustful male opponents. If she loses, she will pay the ultimate erotic price!

(Source: Seven Seas Entertainment)