If you're looking for manga similar to Deathtament: Shin Megami Tensei DSJ Another Report, you might like these titles.
Nobu is a very troubled teenager, forced to transfer six months after his previous school disappeared into the Underworld, but school troubles fade when a demon kills his mother, and he finds himself accused of the crime and on the run from the law. Nobu's demon friend/sidekick Pixie is kidnapped by Colonel Gotoh, who is plotting to use demons to his advantage.
When the siren sounds, light must be kept on... In this new-style thriller, siren rings out, islanders are transformed completely, and nightmares multiply!
"Capture the deceased one." Under these instructions, Kirishima heads off to a closed-down school where ghost stories dwell...
Deronga Five Alpha is a unstable, vicious and dying planet which, according to studies, used to be a very lush planet with all kinds of different species. Captain Bagures, the cold and cruel leader of a research craft, sends a military team on a suicide mission down to the planet. The team is violently slain, and leader of the team, Cannon, vows vengeance on Bagures with his last breath. 20 years later, the spaceship Oruganera docks near Deronga Five Alpha to watch the death of the planet. As the planet explodes, a creature attaches itself onto the spaceship...
July 2005. There is a series of mysterious homicides happening in Tokyo. All the victims are women, and the cause of their death was traumatic shock. Judging from the abnormality of these murders, there are reasons to believe that they have something to do with the occult. In order to make clear the direction they should take, the metropolitan police department decided to carry out their investigation by engaging the help of those influential figures of the occult world. July 21st. The metropolitan police department officially labeled this incident as the No. 568 Specific Crime!
April 2014, Japan. It all starts with the High Energy Accelerator Research Organization that’s looking into the yet-unknown Exotic Star particle. A great war begins between two factions: the Enlightened, and the Resistance!
A research laboratory in the international city Kanazawa. Kei Sagami, daughter of the chief of laboratory, Professor Hiromitsu Sagami, becomes a witness of an experiment - the awakening of a sword, the Maken. It's able to heal mental disorders, at least according to her father. But as strange foreigners forcibly break into the laboratory, kidnap her father and put the actual carrier of the sword out of action, she experiences the true meaning of the Maken first hand.
In the streets of Tokyo, demons run rampant, silently killing and possessing innocent citizens against their will. Meanwhile, in one local high school, the once ridiculed computer loving Akito Kobayashi has returned, armed with the knowledge to summon the greatest demon of them all, Ose, to destroy all of humankind. Along with Takehiko Kuki and Marika Kusaka, spiritual ninjas that have spanned centuries protecting the gods, one man must fight to stop the evil god from resurrecting, before it's too late...