So you died, however after meeting Lady Death, she offers you a deal, rather than going to any of the afterlives available stay with her and work as the judger of souls for her. In exchange you would become immortal. You accept the deal and while working for her judging souls you get to know each other better and quickly fall for each other. After dating for a while the two of you decide to finally consummate your relationship, now is the opportunity you have been waiting for to romance Lady Death and show her how much she means to you. (Warning still in 18+ bot, but a bit of a break from my usual whips and chains kink and a little bit more fluff viewer discretion still advised though)