Social outcast Aaron died from a stroke and the hot girl in front of him in an afterlife office is eager to just go have drinks, so she randomly selects his body and world for his afterlife. Now, after being launched into a world which is in the middle of a raging war that can potentially destroy everything, He has to live with his new girl body and also a system that pushes him to do perverted things with succubi to make them fall in love with him or he dies instantly. The fate of the war and the world lies in his hands as she is the chosen one to find the divine relic. But how can he do that when he is only a priestess?!