Chikara UEHIRA, who was exiled to Nii-jima Island of Izu (the last case of banishment) because of his involvement in the assassination of Shonan YOKOI, a key figure in the new government (he was later given a special pardon after ten years), met Kazue SOMA, who was the last head of Shinsen-gumi and was also banished to the island, on an exile ship.
新政府要人である横井小楠暗殺事件で島流し（島流し刑の最後の例）となった上平主税が、伊豆新島への終身流刑（約十年後特赦）となった際、流刑船内で同じく島流しとなる新選組最後の局長・相馬主計と出会った。