Training Experience Confession: I Became A Female Dog(2007)

Middle-aged salaryman Soichi encounters a strange man named Aoki at a bar he stops at on his way home from work. Aoki is a trainer who cultivates perfect submissive women. Aoki asks Soichi to marry Miyako, a submissive woman he has trained. Though skeptical, Soichi takes Miyako home, but gradually finds himself becoming infatuated with her...