ちんちん研究シリーズも遂に完成形に！！女の子達のプライベートな性体験を聞いてるうちに、いつの間にやらTVでは絶対に見られない淫語トークで大盛り上がり！そして何故か会場に巨根さん登場！みんな、目の前の巨根に興味津々！パンツを覗いて「大きい！」パンツに手を突っ込んで「かた〜い！」最後は先生の手コキをみんな揃ってじっくり研究！！
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SDDM-617 SOD-style Much Ado About Nothing: Handjobs and Penis Research by Female College Students
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