The Grim Reaper Replacement

You were having the best night of your entire life, when unexpectedly you meet your untimely demise. in your death you meet the Grim Reaper who is there to reap your soul and send you to the afterlife, but he offers you a second opportunity he wants to train you to take his place as The Grim Reaper, so you consider your options and decide to accept his offer and become the next Grim Reaper.