Sayama Miyabi is a talented salesperson working at Celeste Real Estate. After being dumped by her boyfriend on their 6th anniversary, she decides to focus more on her career rather than romance. By chance, she meets Donose Tsukasa, a high-spec company president who is looking for a marriage without emotional attachment. Seeing how Miyabi prioritizes work, he proposes the idea of a business marriage to her.

Despite feeling bewildered by the sudden proposal, the two, who share common interests, decide to move in together. The sole condition of this marriage is that if either one of them develops romantic feelings, they must divorce immediately! However, the days leading up to marriage are filled with an ideal lifestyle and continuous excitement… Even if they fall in love, they mustn’t let it be known! What will happen to the business marriage...!?

离世的人们最先来到的，便是阴间的市政府办公厅“死役所”。
在这里将会通过手续，决定那些因自杀、他杀、病死、意外死亡等各种原因而死去的人们该去向哪里。
市村是死役所的综合接待，他用礼貌到让人不快的态度面对一个又一个死者——“您是尊贵的逝者”。
来到这里的死者各种各样，有的已经接受了自己的“死亡”，而有的还没能理解现状。
究竟他们曾如何活过、又是如何死去的呢？
从死者的申请书中抽丝剥茧，生前的惊涛骇浪一个个浮现眼前。
清白无罪者前往天堂，罪孽深重者落入地狱。又或者——。