Shinigami no Ballad (2006)

The most miserable person on Earth must save the world from happiness.

No job is more stressful, dangerous or exhilarating than those of the Firefighters, Rescue Squad and Paramedics of Chicago Firehouse 51. These are the courageous men and women who forge headfirst into danger when everyone else is running the other way and whose actions make the difference between life and death. These are their stories.

Mark Scout leads a team at Lumon Industries, whose employees have undergone a severance procedure, which surgically divides their memories between their work and personal lives. This daring experiment in "work-life balance" is called into question as Mark finds himself at the center of an unraveling mystery that will force him to confront the true nature of his work… and of himself.

Across continents and decades, five brilliant friends make earth-shattering discoveries as the laws of science unravel and an existential threat emerges.

Smart, sarcastic and a little dead inside, Wednesday Addams investigates a murder spree while making new friends — and foes — at Nevermore Academy.