The forbidden realm where the desires of an underground gentleman run rampant. Hesitation and restraint are forbidden—only the raw release of primal urges. Tonight's sacrifice is Ai Kazuki, an unassuming and gentle office lady on the surface. But her hidden, twisted masochistic nature is revealed, unleashing extreme ecstasy. Subjected to relentless flesh slave training, her mind and body are driven to the depths of orgasmic torment by massive, brutal sex toys. A complete climax experience begins here!