My Little Sister Doesn't Care That Her Panties Are Always Showing I'm Used To It, But One Day, She Showed Me A Thong And Asked, "Doesn't This Make Me Look Grown Up?" This Was Too Much, I Was Immediately Rock Hard!! And She Must Have Noticed, Because She Got Hot And Horny...!!

いつもパンツ丸見えでも全く気にしない妹。それに慣れてしまった僕だけど、ある日妹が「大人っぽいでしょ？」と僕に見せつけてきたのは『Tバック』！！こればっかりはソソられてしまい即勃起！それに気付いた妹もだんだん発情してきて…！！

我姐姐總是甚至內褲暴露真的不關心。 習慣它，但是有一天我姐姐"你成熟嗎？ "和 T 背我已經表明它是 ！ 這是唯一 SOS 是它立即直立 ！ 我的妹妹注意到它逐漸變熱。