Iba (射場) is a low-level yakuza who runs a loan shark business. One day, the building management company changed employees to Kyouno (京野), came to offer greetings, but spoke rudely as soon as he opened his mouth and caused Iba to be very unhappy. However, Kyouno then discovered that Iba had secretly increased the interest rate and was using intimidation tactics to demand repayment; he used this to threaten Iba into sleeping with him as payment for not saying anything. Iba thought that Kyouno only had an unusual interest in him, only to discover unexpectedly that not only is Kyouno the group’s eldest son, but he has been in love with Iba for many years? Following repeated attacks and defense, Iba is insnared into Kyouno’s love trap, but tinking that the two of them are very different had and have no future, he wants to draw a clear dividing line… 射場はヤクザの下っ端として貸金業を営んでいる。ある日、ビルの管理会社の営業が担当替えの挨拶にやってくるが、新しい営業・京野は初対面から無愛想でいけすかない男だった。だが、裏でやっていた金利上げや脅迫まがいの取り立て行為が京野にバレてしまう。しかも組長の息子だという京野への口止めとして、射場は体を差し出すことに。「あなたに勃つのは当然です。好きな人なので」変化球熱愛御曹司に狙われた射場の運命はいかに!?