両親を事故で無くし生活と学費が苦しくなった
姉（高城 麻耶）は弟を養うため大学を中退し、
性の経験もないが、生活費を稼ぐため風俗嬢になっていた。
姉が風俗嬢になったことを露ほども知らない弟（高城 真純）は
いつものようにバイトに出て、休憩時間になると
店長の退屈な経験談を聞くのが恒例になっていた。
店長はいつもの風俗嬢との体験談を話していた。
もちろん、真純だって男だから、興味がない話ではなかったが
苦学生である真純にとって興味はあるがとてつもなく縁の遠い話だった。
話を聞いていると店長の話すオキニ嬢だという嬢も同じ境遇だと話す。
同じ境遇だから相性が良いはずだと嬢のパネルを魅せてもらうと
自分の姉にそっくりで源氏名も姉が自分の愛称に呼ぶ『ジュン』だった。
姉の麻耶が風俗嬢をしているはずないと考えた真純は
店長の伝手を頼り、風俗ライターや風俗店のボーイから
詳細の話を聞いていく内に姉の麻耶である確信を持っていく。
風俗嬢として働く麻耶を止めたい
一方で家族のために風俗で働く姉を見て真純は
辛いと感じつつも興奮して勃起していた。
真純は自分のために働く姉を止めることはできるのだろうか。
I lost my parents in an accident, and it became difficult for me to live and pay for school.
Her older sister (Maya Takashiro) dropped out of college to support her younger brother.
Although she has no sexual experience, she becomes a prostitute to earn a living.
Her younger brother (Masumi Takashiro) has no idea that her older sister has become a prostitute.
He went to his part-time job as usual, and when it was time for a break,
It had become customary for me to listen to the store manager's boring experiences.
The manager was talking about his usual experiences with prostitutes.
Of course, Masumi is also a man, so it wasn't like I wasn't interested.
Masumi, a struggling student, was interested in this story, but it was a far-fetched topic.
When she was listening to the story, she said that the woman the store manager said was in a similar situation.
When I asked her to show me her panel, she said that since they are in the same situation, they should be a good match for her.
She looked exactly like her own older sister, and her original name was ``Jun,'' which her older sister called her by her pet name.
Masumi thought that there was no way her older sister Maya was working as a prostitute.
She relies on the manager's help, and receives advice from an entertainment writer and an entertainment shop boy.
As she listens to the details, she becomes convinced that it is her older sister Maya.
I want to stop Maya from working as a prostitute for my girlfriend.
On the other hand, Masumi sees her sister working in the sex industry for her family.
Even though she felt it was painful, she was getting excited and had an erection.
Will Masumi be able to stop her sister from working for him?
