SNIS-927 Every weekday without you, I'm fixedly trained by my father-in-law. Yoshizawa Akumu.

Akabu moved into her husband's family home, where there was a room she had been warned not to enter. One day, the door was unlocked, and out of curiosity, she peeked inside to find a collection of eerie restraints that her father-in-law had assembled. Stunned by the bizarre space, her father-in-law entered the room… In the absence of her husband, days of repeated body restraint and humiliation ensued. However, Akabu began to derive pleasure from it…