When Mr. Satou, a company employee at the world's largest electronics company, is called upon by his boss to tutor his only son in exchange for a high ranking position within the organization, things couldn't have been peachier. At least, that's what he thought... Little did he know that his student was Ichirou Matsushita, a young boy with the mind of a genius and a terrifying hidden agenda. It doesn't take long for Satou to realize that he is the second home tutor in as many weeks that has been sent to teach the little boy. What's even more unnerving is that the previous Tutor's whereabouts appear to be a mystery... The little boy's true identity is revealed when he puts Satou under a curse, turning him into a lizard man and making him one of servants. Little Ichirou Matsushita is none other than "Akuma-kun" boy genius and master of black magic. His goal? To open the portal between hell and earth, summon forth hell's most powerful demons, and enlist their help in taking over the world!

One day, when Remu Mikage is on a video call with his sister, Shiki, who has traveled to the futuristic Okinotori-island Mega Float City for school, she confesses that both the audio and visuals of her are completely artificial. In order to be more efficient in her studies, Shiki has used neural-linked nanomachines to upload her consciousness onto a computer and is storing her physical body in a "body pool." While shocked, Remu is supportive of his sister's decision, until the disaster known as the "Early Rapture" happens. The Early Rapture causes everyone who has uploaded their consciousnesses to either fall into a coma or perish. Remu visits his sister's empty apartment one last time, but is shocked when Shiki arrives at the door. With no memory of her family or past, and being pursued by a violent group of researchers, Shiki and her brother are forced to flee using her newfound power of nanomachine manipulation.

January 2118. Chief Inspector of the Criminal Investigation Department, Akane Tsunemori, receives a report of an incident on a foreign vessel – the body of Professor Milicia Stronskaya has been discovered. Behind the incident is a group known as the Peacebreakers, a foreign paramilitary organization and a new outside threat who are targeting the professor's research papers known as the "Stronskaya Document". Reunited with Shinya Kogami, a former fugitive from the Criminal Investigation Department, Akane grapples with a case that quickly escalates beyond their expectations. The Stronskaya Papers could reveal a truth that would shake Japan's government, and even the Sibyl System, to the core. It is in this untold story that the missing link is revealed.

Gorou, a first-year high school student at a private high school in Tokyo, has no "hopes," no "dreams," and no "ambitions." The world is "indifferent" to him, and he spends his boring, unchanging days with his best friend Akitsu while having a faint longing for Honoka, a classmate at the same school. One day, Gorou receives a strange notification on his smartphone. "You have been chosen. Please make a wish." Gorou thought it was malicious spam, so he tweeted, "I want to do something naughty with my idol Honoka." The next day, he is invited by Honoka to pull down his pants in a deserted arcade... "Congratulations on the fulfillment of your great desire!" Then, a mysterious girl, Lall, suddenly appears. Confused by the series of events, Gorou is told of a cruel fate. Gorou was chosen by the "Great Will" to fulfill his wish, and in order to do so, he and the other Kamisama (God) candidates would kill each other for the title of "God" until there was only one left. The first candidate to appear as a potential Kamisama was, of course, Honoka, whom Gorou had longed for. What choice did Gorou make against Honoka, who attacked him mercilessly?