Hagure Idol: Jigoku-hen [はぐれアイドル地獄変]

The story of Misora Haebaru, an 18-year-old karate expert from Okinawa who went to Tokyo to enter the entertainment industry in hopes of supporting her family. She gets tricked into being a gravure idol who wears lewd clothing and is forced eventually to enter the AV world, but she won't go down without a fight!