Ibara Naruse, Aoi Fukasaku and Taeko Nomura are Coppelion, genetically engineered to be immune to radiation and attached to the Japan Ground Self-Defense Force's Dispatch 3rd Special Force. In 2036 they walk into a Tokyo that has been sealed off for twenty years since a meltdown at the Odaiba nuclear plant. Tomonori Inoue wrote and drew these three chapters as a prequel to that manga, and they were later bundled with the Coppelion anime's home video volumes. Short side material, not part of the main run.