1-8-35 Konan, Minato-ku, Tokyo

1-8-1 Akasaka, Minato-ku, Tokyo

4-14-1, Sotokanda, Chiyoda-ku, Tokyo

Sogetsu Kaikan, 7-2-21 Akasaka, Minato-ku, Tokyo

2-4-11 Kudan-minami, Chiyoda-ku, Tokyo

18f kasumigaseki building, 3-2-5 kasumigaseki, chiyoda-ku, tokyo