Akagi Sayaka is an associate professor at a certain private university, specializing in the history of modern punishment. However, her interest goes beyond mere academic research; she derives intense sexual arousal from cruel illustrations of the Edo period and indulges in vigorous self-bondage masturbation every night. Beneath her plain teacher's attire lies a well-developed, mature body that is impossible to conceal. A hypersexual student who has long harbored strong desires for Sayaka lures her into an evil bondage dojo where she is tormented. Her ripe areolas and nipples are tortured, and her exquisite buttocks, along with her anus, are teased and subjected to repeated enemas.
