女っ気のない兄だったが、運よく美人な奥さんをGET！しかしお互い経験が浅すぎて子作りが上手くいってない、という相談を兄嫁から受けるボク。「私がエッチ下手だからかな…」と悩む兄嫁から驚きの相談！なんとボクを子作りの練習相手にご指名！さすがに兄の奥さんとそういう事は…と悩む間も与えずボクのチンポをネットで得た知識で攻めまくる美人兄嫁！「夫には絶対言わないから…」との禁断のお誘いに、ボクの理性は崩壊！子作り練習なので当然生挿入！下手どころかエロすぎる美人兄嫁の一生懸命騎乗位にボクのキンタマは種付け準備OK！本番さながらの子作り練習なので、こちらも当然生中出し！ちょっと義姉さん…練習どころか、これで妊娠しちゃったらどうするつもり～！？

My brother was a man with no luck with women, but he was lucky enough to get a beautiful wife! However, my sister-in-law confided in me that they were having trouble conceiving a ***** because they were both inexperienced. "Maybe it's because I'm bad at sex…" she worried, and then she made a surprising request! She chose me as her practice partner for making a baby! Before I could even think about whether I should do something like that with my brother's wife, my beautiful sister-in-law attacked my dick with the knowledge she'd gained from the internet! "I'll never tell my husband…" she said, a forbidden invitation that completely broke my self-control! Since it was a practice session for making a baby, of course it was raw sex! Far from being bad at it, my beautiful sister-in-law was incredibly sexy, and her enthusiastic cowgirl position got my balls ready to be impregnated! Since it was a practice session just like the real thing, of course I came inside her raw! Hey sister-in-law… this isn't just practice, what are you going to do if you get pregnant?!