This is a never-before-leaked, completely unreleased video featuring a secret hobby seminar held at a notorious illegal massage parlor that was shut down by authorities. Filmed under various pretenses such as "quality control" or "owner's approval," the footage captures unsuspecting girls being recorded without their knowledge or consent. Despite knowing they were being filmed against their will, these young ladies bravely endured the humiliation and continued to serve their clients, often finding themselves unable to resist the pleasure. A total of eleven participants are featured in this intimate recording, each experiencing intense stimulation despite the tense atmosphere.

まだどこにも流出していない完全初出し、摘発によって姿を消した極悪風俗店で行われていた趣味講習を収めた映像です。時には盗撮、時には「オーナーの確認用に…」等と言いくるめ撮影。何も知らずにやってきた無知な女の子のあられもない姿を合意・非合意関係なしで撮り貯めていたようです。これも面接だから…と断れない雰囲気の中、必死に快感に堪えながら奉仕を続け、講習中にも関わらずイかされまくる11名を収録。