From Manga-Heaven:
Jinna Amakura was a typical, if not a bit stingy, high school boy. Typical, that is, until he died. Or... at least he was supposed to die, but he didn't. Jinna is now considered by the powers that be as a "Soul Irregular".
Enter Nagi. Nagi is a Grim Reaper on her first job - to kill Jinna and return his soul to the proper cycle of life and death. If she…