A man finds himself taking care of his naughty niece at home for a while. When they reunite after some time apart, he notices that she has grown into a beautiful, pale-skinned girl with an alluring J-style look. Unable to control his excitement upon seeing her in her school uniform, he impulsively tastes the saliva she unintentionally leaves behind. As if sensing his perversion, the niece teases him by saying, "Uncle, you're such a freak! You like drinking spit, huh? Want me to give you more?" She then proceeds to escalate their encounter, expertly pleasuring him with her skilled tongue until both their desires are satisfied. Throughout this intimate exchange, the uncle becomes increasingly submissive to his young mistress' demands, eventually allowing her to control his orgasm and even make him consume his own cum and piss.

黒髪で清楚に見えるが素行の悪い姪っ子をしばらく自宅で預かることになった。久しぶりに会う姪っ子は色白美少女に成長しており制服姿のJ系が家にいるという現実に興奮してしまった。姪っ子が不意に垂らした唾液に我慢できず思わずペロっと舐めてしまった。ヤバい！性癖がバレて引かれる（滝汗）！と思ったが「叔父さんヤバいねw変態じゃん。唾液飲ませてあげよっか？」と姪っ子が小悪魔痴女化した！若い女子の唾液でち○ぽが破裂しそうなほど勃起してしまった。「すんごい舐めてんじゃんw美味しい？」と、姪っ子はどんどんエスカレートしていきマン汁とおしっこも飲ませてくれた。下僕化したち○ぽで姪っ子が満足するまでピストンを強要された…。