容姿端麗・成績優秀で憧れだった義姉がメンズエステで働くことに…！？ある日突然、「練習させてくれない？」と頼まれ自宅で紙パンツ装着＆エステ練習！健全な仕事と思いきや、抜群のセンスと成長速度で男のツボをすべて抑えたキワどい鼠径部マッサージに勃起不可避！！あえなく理性崩壊…！フル勃起したチ○ポを頼み倒して手コキ・密着マッサージ練習のはずが中出し基盤・シャワー同伴フェラチオからの発情セックス！ぐしょ濡れ姉おま○こが弟チ○ポを前に発情しっぱなし！

My beautiful and academically gifted stepsister, whom I'd always admired, is now working at a men's spa…!? One day, she suddenly asks, "Can I practice with you?" and I end up practicing at her house, wearing paper underwear! I thought it would be a wholesome job, but her exceptional talent and rapid improvement mean she knows all the right spots for a man, and her daring groin massage makes an erection unavoidable!! My reason crumbles in an instant…! I beg her to give me a handjob and close-contact massage practice with my fully erect cock, but it turns into a cumshot, a shower together, a blowjob, and then passionate sex! My soaking wet sister's pussy is constantly aroused in front of my cock!