Book of Wei
In 2008, Yasunari Takarabe, incumbent Mayor of Tsushima rejected the South Korean territorial claim: "Tsushima has always been Japan. I want them to retract their wrong historical perception. It was mentioned in the [a chapter of volume 30 of Book of Wei in the Chinese Records of the Three Kingdoms] as part of Wa (Japan). It has never been and cannot be a South Korean territory."