SORA-561 Reika Ichiba Is Tied Up and Trained as a Rope Slave by a Slave Trader

A phone call from her boss leads to Reika Ichiba being sold to a slave trader, who ties her up without questions and packs her in a cardboard box. She is delivered to a man's house, where he sizes her up and begins training her while she is bound. She cannot move and undergoes humiliating submission.