"I'm a virgin and in debt." Shiho is a girl who has lost everything after her father runs away after borrowing money from the yakuza. While she was wandering around the city trying to find a night job for the debt she couldn't pay back, she was suddenly caught by a yakuza and ended up having to work at the shop of a man named Saejima who runs customs to repay debts. However, virgins are out of fashion!? Saejima tells her that he will make her a usable substitute and despite being her first time, her body ended up roughly exposed. 処女だけど借金のカタに仕込まれます。】 志保は少し負けん気の強いどこにでも居る女の子。 ある日、父親がヤクザに金を借りたまま蒸発してしまった。 到底返せない額に、夜の仕事を探そうと街を彷徨っていたところ突然ヤクザに捕われてしまう。 借金返済のため風俗を経営している冴島という男に自分の店で働くことを要求される志保。 だけど、処女は戦力外！？ 彼女を使える代物にするため自分が仕込むという冴島。 敵意を剥き出しにする志保だったが、男の力に勝てるわけがなく…。初めてなのに乱暴に体を暴かれて――。