[Nanonan no Tei (Nanonanno)] JK Kuppuku Kousoku 2 ~Aikidou Shoujo ga Maketa Hi~

An aikido girl's winning streak comes to a humiliating end the day she loses her first fight—and her captor makes sure the defeat sticks. Chained in a fenced lot with her arms locked overhead, she can only squirm and protest as a vibrator is worked against her helpless body, a camera clicking away to capture every tearful gasp and trembling climax. Even when the relentless toy pushes her over the edge again and again beneath the open night sky, the restraints hold fast, turning a proud martial artist's loss into something far more lasting.