My sister confided in me that she feels embarrassed because she gets too turned on easily whenever we touch each other. It seems like she has a super sensitive body complex, where just a little bit of touch can make her cum. She even asked for my help with improving her health, so when I actually touched her... wow! She was moaning and squirming uncontrollably! Instead of focusing on physical improvement, we ended up having full-on sex to satisfy our desires!

義妹から「私…すぐイッちゃうから恥ずかしくてエッチ出来ない」と相談されたボク。どうやら義妹は少し触れられるだけで感じちゃう超敏感全身性感帯コンプレックス。さらに体質改善に協力して欲しいと頼まれ、義妹の体を触る事に…。すると実際に触ってみたら想像以上にイキまくり！体質改善するどころか、目の前でアンアン感じだして練習どころじゃない雰囲気に！結果、お触りだけじゃなく、挿入までして本格的な体質改善に！