In a special classroom designed for male masochists, teacher Ai Sayama holds daily lessons on the secret techniques to becoming a true M man. Today, as always, students gather—men eager to evolve into the ideal submissive partner who can satisfy their desires. Dreaming of being praised by sexy older women, they undergo gentle yet thorough training, practicing with their bodies to master each skill. Through careful study of nipple play, testicle twisting, anal training, and other methods, both body and mind become fully satisfied. The lessons themselves are a continuous stream of pleasure, so intense and arousing that the more focused they become, the more overwhelming the sensation grows.