After being brutally murdered in a subway station, a teen boy awakens to find himself resurrected by a strange computer named Gantz, and forced to fight a large force of invading aliens in Osaka.

Year 2116—The Japanese government begins to export the Sibyl System unmanned drone robots to troubled countries, and the system spreads throughout the world. A state in the midst of a civil war, SEAUn (the South East Asia Union), brings in the Sibyl System as an experiment. Under the new system, the coastal town of Shambala Float achieves temporary peace and safety. But then SEAUn sends terrorists to Japan. They slip through the Sibyl System and then attack from within. The shadow of a certain man falls on this incident. In charge of the police, Tsunemori travels to Shambala Float to investigate. The truth of justice on this new ground will become clear.

Set in a future world. Japan has created a great medical technology that controls ethics, health, and social interaction to create a perfect world. Three young girls attempt to stand up to this by committing suicide, but it doesn't work. Years later, Tuan, one of the girls who attempted suicide must prevent a crisis that threatens this "perfect" world.

With the space program attempting to travel to Mars, 21st century scientists were tasked with warming up the planet so that humans could survive on its surface. They came up with an efficient and cost effective plan of sending cockroaches and mold to the surface so that the mold would absorb the sunlight and the insect corpses would serve as a food source for the mold. It is now the year 2577 and the first manned ship to Mars has landed on the planet and the six crew members are ready for their mission. But what they find are giant mutated humanoid cockroaches with incredible physical strength. The crew members are easily wiped out, but not before sending a transmission back to Earth. Now, humanity will send elite warriors to exterminate the mutated bugs and claim back Mars.

The story takes place in 19th century Europe, and revolves around John Watson. He is scouted by the government to become a secret agent. However, Watson lives in a world where "Frankensteins"—human corpses that are re-purposed with a false soul in order to use them as laborers—are used to improve industrial development.

Sara, a young actress, is able to land the leading role in big theater play, but soon learns that somebody or something is trying to end the production at all cost, which puts Sara in deadly danger.

Nursing student Asuka has just moved into an apartment complex with her parents and younger brother. On the first night in her new room, she is awoken by a strange scratching sound coming from the apartment of her neighbor, a reclusive old man who has refused all attempts at communication. Concerned over his well being, Asuka enters his home only to find him dead from malnutrition. Worse, it looks as if he had been trying to claw his way into her room. Asuka learns that there have been a number of strange deaths in the complex over the years from Shinobu, the handyman cleaning up the old man’s apartment. Even the girls at school whisper rumors of it being haunted.