学内一の優等生「るかちゃん」。清楚で真面目な彼女が、下校途中に黒パンストを履いた女子●生しか愛せない男に声をかけられる。金に糸目をつけず何度も要求されるエロポーズ。ねっとりとした接写で、パンストの光沢、脚のライン、蒸れた足裏まで克明に映し出される。最初は戸惑いと羞恥で震えていた「るか」だったが、媚薬を飲まされ、執拗なパンスト愛撫に徐々にメスとしての性癖が開眼していくのであった。汗ばんだ黒パンストに染み込む体臭と愛液。美少女の匂いが濃厚に立ち込める着衣プレイ。勉強ばかりだった彼女の未熟なマ●コが、黒パンスト越しに刺激され、何度も痙攣するほど絶頂へ！美しい脚とプリッとした尻をパンストに包まれたまま、断ることのできない無垢な身体に半中半外の真性中出し！！同級生には絶対に言えない、放課後の淫らな課外授業。匂い立つ蒸れた脚裏、太ももまでを包むデニールの感触、興奮を誘う体液まみれのパンスト…。優等生の隠された変態性と、黒パンストへの狂おしい執着がここに！！

Ruka-chan, the top student in school, is approached on her way home by a man who only loves girls in black pantyhose. He spares no expense and repeatedly demands erotic poses. Close-ups capture the sheen of the pantyhose, the lines of her legs, and even the sweaty soles of her feet in vivid detail. At first, Ruka trembles with confusion and shame, but after being given an aphrodisiac and subjected to persistent pantyhose caresses, her feminine sexual desires gradually awaken. Her body odor and love juices soak into the sweaty black pantyhose. The scent of a beautiful girl permeates the clothed play. Her immature pussy, which has only ever studied, is stimulated through the black pantyhose, and she reaches orgasm so hard that she convulses again and again! With her beautiful legs and firm buttocks still encased in pantyhose, her innocent body, unable to refuse, is filled with a half-in, half-out load of real cum! A lewd after-school lesson that she can never tell her classmates about. The pungent scent of sweaty soles of feet, the feel of the denier fabric enveloping her thighs, the arousing bodily fluids-soaked pantyhose… The hidden perversion of a model student and her insane obsession with black pantyhose are revealed here!!