A Japanese expedition led by Jushichiro Otsubo climbed Jogin I and Jogin II. On August 19 Jushichiro Otsubo, Mrs. Yachiyo Yamanaka, Mrs. Kimiko Yamashita, Yukio Shiozawa, Hideaki Nara and Mrs. Kieko Tezuka reached the summit of Jogin I and on August 21, Kazutoshi Okuya and Tokuji Iida climbed to the summit of Jogin II .