Society of International Economic Law
, THE JAPAN ASSOCIATION OF INTERNATIONAL RELATIONS
, International Law Association Japan Branch
, JAPANESE ASSOCIATION OF WORLD LAW
, THE EUROPEAN UNION STUDIES ASSOCIATION-JAPAN
, The International Human Rights Law Association
, American society of international law
, THE JAPAN ASSOCIATION OF INTERNATIONAL ECONOMIC LAW
, JAPANESE SOCIETY OF INTERNATIONAL LAW
, 国際商取引学会