Story begins with the ordinary life of HEL; the Grim Reaper and all-powerful entity Death. Following his constant attempts to catch at any cost the rogue soul REJI, a shaman who has escaped dying for over a thousand years and gone slightly senile, HEL finds himself being fired and exiled to the mortal world. Rivalry between REJI and HEL continues in the mortal realm: REJI is unable to get his revenge while constantly dodging HEL, and HEL only wants his job back and believes he can’t get it without killing REJI. As the story progresses, REJI uses a school as his hideout and HEL gets a job there in order to have a chance to take his life! Will HEL finally be able to reap the soul he needs to appease the Gods in the hope they'll let him continue to do what he does best?