Synopsis
Iris can’t die. As the new director of the Monster Containment Agency, she frees Nerio, an SSS-Class mutant Siren imprisoned for slaughtering 107 people. He tries to kill her three times—yet she keeps saving him. As their dangerous bond deepens, Iris discovers Nerio was never the monster they claimed. And the truth behind her immortality may be the very thing that can finally set him free.