Shouta is an ordinary high school boy until a creature called a Gasshapon, built like a capsule prize machine, appears before him and says it has come from the future. It was sent back by the future Shouta, whose era is threatened by CC, or Cold Cosmo, an alien group set on turning every warm, bright star and planet into a dark, frozen world like their own. The Gasshapon means to bring young Shouta to 2080 to save that future, but time travel is still unreliable. Instead he lands in 1582, at the time of the Honnouji Incident, where he becomes the warlord Oda Nobunaga. The planned ten-episode sci-fi ONA was cancelled, and a one-minute promotional video is all that remains of it.