Japanese historian Hideki Kajimura, former Kanagawa University economics professor
- Claimed that Japan's Preoccupancy of Ownerless Land Theory is de facto "Act of invasion on actual Korean territory" according to the international law
Japanese government made decision to incorporate Dokdo as Japanese territoty during Russia-Japan War.
* Japan's argument : Territory incorporated by Preoccupancy of Ownerless Land Theory ( meaning land with no people living in become owned by person who first discovers it)
5 years prior to such incorporation of Dokdo by Japan, according to the Korean Imperial Decree No.41, Korea has elevated Ulleungdo which had been subordinate to Uljin Prefecture to Uldo County and issued that Uldo County office shall rule over all of Uldo proper and its dependencies including Dokdo. The decree was published in Central Official Gazette and officially announced Dokdo as Korean territory in regard with international law.
Seichu Naito, Japan Shimane University emeritus professor
- Claimed "Japan has assured that they have no intention of possessing Dokdo by taking the measures of ban on crossing the sea near Ulleungdo in 1696"
Japan in Edo period and Meiji period, didn't express any intention of possessing Dokdo, publicly declaring that Dokdo is irrelevant with Japan