South Korean President Lee Myung-bak will visit Japan this weekend for talks with Prime Minister Yoshihiko Noda, the presidential office said Wednesday, as relations between the two neighbors show signs of tension over the issue of Tokyo\'s wartime sexual enslavement of Korean women. The issue of former sex slaves, euphemistically called \"comfort women,\" has long been a thorn in relations between the two countries, along with disputes over Japan\'s territorial claims to South Korea\'s easternmost islets of Dokdo. Japan colonized South Korea from 1910-1945.