赤环的少女：奴隶斗技场

Captured by a group of kidnappers on her way back home, the swordswoman Sachi is brought to a mysterious colosseum to serve as its latest slave fighter. To escape from her predicament, she must defeat 7 other fighters to earn her freedom...

Against her father's wishes, Sachi took up her sword and went on a quest to prove herself as a capable swordswoman. However, her journey quickly came to an end as she was ambushed by a group on the way back, who swiftly captured and took her to a mysterious colosseum hidden within the city. With a curse placed on her, she is told she must fight in the arena in order to get back home alive.