REAL-752 — Box Irimusume Ai Kawana

A sudden tragedy befalls Ai, who was raised with love from her parents! She is sold off to pay off her debts, and when she arrives at her new master's mansion, she is met with a box-shaped restraint device she has never seen before! Unable to move in the box, Ai is subjected to relentless perverted training on her exposed lower body, and gradually becomes infatuated with the master and gives herself over to him.