50,000 years ago, Hell was destroyed because of too much Foul from the resentment of the souls that later turned to Soul Eaters and devoured everything in their wake, leaving nothing of Hell. The gods above in Heaven, in order to take care of the newly-died souls, created the Afterlife Department comprised of grim reapers. Huo Ling was delivering food that day when he met Yi Bing and the guy gave him a warning. When he arrived to the customer's unit, he was killed. Huo Ling: you set up a death flag for me! Yi Bing: I'm a grim reaper. I'm the flag myself. Let me help you solve the mystery of your death. Huo Ling: your sister! Alternative title: The Different Ways I Died at 23 Update: daily
Yi Bing, Huo Ling, Jiu Ye, Bai Wu, Shi Jiu and Shou Ji fell silent as they looked at each other. When they heard Feng Er and Lili said that they blew up the laboratory building, they were stunned. After all, the grim reapers aren't allowed to harm the mortals, especially killing them. So, they can't believe that Feng Er and Lili would kill the researchers, too.
But, it is different when it was stated on the Death Note that someone will die. So, that explosion that Feng Er and Lili caused is the fate of those researchers. Thus, Feng Er and Lili didn't kill them. It was their fate instead. That is, to die in that explosion.
However, it seemed that one of them has slipped away? Feng Er and Lili's goal was to end the demonic research and destroy everything related to it, thus exploding the laboratory one and for all with all the researchers inside it. Yet now, they found that one of them might have lived…