"Slave & Master" is the final installment of Riho Matsuoka's Training Trilogy, depicting the ultimate breaking of Riho in this concluding chapter. The film features extreme torment through clothespin torture, whip strikes, needle piercing of the nipples, intense electro-stimulation using an electric dildo, and even creampie ejaculation in the anus. Riho's body is engulfed in relentless pain, each wave bringing forth tears. This work deeply explores the theme of training, portraying the complete psychological and physical domination of Riho. As one painful scene follows another, her emotions are pushed to the limit, delivering an intense, dramatic experience that must not be missed.