The Rock that started it all is the meteorite that carried the Apocalypse Virus, and started the series.
In 2022, the rock fell on Oshima, where Mana Ouma found it. She later told her father, who found it with his friend. They discovered that the meteorite had the Apocalypse Virus in it, but both Mana and her mother were infected. Both Kurosu and Shuichiro dedicated their lives to researching the virus. It was kept in Kurosu's lab until episode 8.
In episode 8, Gai had Shu organize a trip to the beach of his club to get Souta Tamadate to Oshima, so Shu could use Souta's void to open Kurosu's lab. But they were too late, as Shuichiro used Kurosu key to unlock the lab and steal the rock. He was later found out by GHQ and was imprisoned and had the rock confiscated. The commander of GHQ planned to return to the United States, with the rock. But before he could, Antibodies lead a take over, by activating the rock, causing a second Lost Christmas. The rock was later used by Shuichiro to make a pair of rings for him and Inori Yuzuriha, so he could act as the next Adam. But the rings were destroyed by Shu Ouma.
The rock housed the Apocalypse virus and could infect others with the virus over a long distance. It infected others by genomic resonance, which could only be activated by a certain song. Inori has the ability to cancel the activation and negate the effects of the rock.
- Due to the rock's abilities, many countries want it and Major General Yan stated, that it him handing it over to the United States, he could be the president.