The world has moved on. With the lost god of death restored to the underworld, it seems that balance has been regained. However, Nothing continues to threaten the underworld—and the mortal world. Trapped in Hell, Zizi fights against the capture of his soul by Four. As he begins to access Four's memories, he uncovers a tragic love story that could be the key to keeping the mortal world safe. Now, Zizi must defy his fate and escape from Hell once more.

On the surface, Rui's life has changed, as she has been recognized as a hero by the Exorcists High School. However, she soon discovers that the spell Zizi was forced to create transforms innocent people into fierce Hybrid Reapers. With the help of her fellow trainees, she vows to stop them. Now, without magic, Giran watches, more hungry than ever, until a dangerous relationship with Yuki begins, hoping that the Hybrid will restore Giran's magic. And when he uncovers a dark family secret, he must decide what he stands for—before it's too late.