After trying to rescue a man on the subway tracks, two teens wake up in a room dominated by a mysterious black sphere that sends them to hunt down and kill aliens hiding on Earth.

This survival action series revolves around the "Future Diary," a cell phone diary that contains entries about future events.

Arata Hoshino is a college student who could be the poster boy for "inertia." By chance, Arata gets his hands on a brand new type of smartphone made by the Chronos Corporation. The cell phone includes a diary application (Future Diary) that details ever-changing future events. At first, he takes advantage of the power of knowing what's going to happen in advance, but one day, the Future Diary displays the message, "Arata Hoshino dies." And thus begins a game of survival between seven people who possess the Future Diary...

Being just a normal student without a special talent, Makoto Naegi wins a lottery to attend the prestigious Hope's Peak Academy where only the top prodigies attend. However, instead of this being the beginning of a wonderful high school life, it's a ticket to despair, because the only way to graduate from Hope's Peak Academy is to kill one of your fellow students or be one of their victims.

15-year-old Yoko, a young girl who is constantly tormented by her self-centered and devilish older sister Makiko, who works for a government office after having graduated from a famous university. But despite her ill nature, Makiko's actions tend to somehow make things better for those around her, causing others to praise her as an "ally of justice."

Summoned by the black sphere, Kei and Masaru fight against extraterrestrials until Masaru grows tired of fighting and refuses to continue.

A man forced to bear power and stripped of humanity. A woman skeptical of happiness. Takeshi Hongo, an Augmentation made by SHOCKER, and Ruriko Midorikawa, a rebel of the organization, escape while fighting off assassins. What’s justice? What’s evil? Will this violence end? Despite his power, Hongo tries to remain human. Along with freedom, Ruriko has regained a heart. What paths will they choose?