My sister is both beautiful and successful in her career, but she has one major flaw - her drinking habit! It's become routine for me to take care of her when she comes home drunk... And today was no different; I was carrying her back to our room when she suddenly collapsed on top of me! She didn't seem to notice, but her skirt kept riding up, revealing her pantyhose-clad ass and thighs. As if that wasn't enough, my hard-on began to grow underneath her, making this an unexpected face-sitting experience. To my surprise, instead of getting angry at seeing my erection, she started to get turned on...

姉は才色兼備でキャリアウーマンなのですが唯一にして最大の欠点が酒癖が悪いんです！酒を飲んで帰ってきた時にはボクが介抱するのが当たり前…そして今日も酔っぱらって帰ってきた姉を抱えて運んでいたら倒れてボクの上に！姉は酔って気付いていないが次第にスカートがめくれパンスト尻が丸出しでしかも顔騎状態で思わぬ顔騎にボクも勃起！さらに目を覚ました姉は勃起したチ○ポを目の前にして怒るどころか次第に興奮しはじめ…