Mercosur is participating at Tourism Expo Japan, which takes place at Tokyo Big Sight from September 22 until September 24. It´s the biggest event of this kind in Japan.
Mercosur stand is located at J2 Section "Central & South America".
On September 22 the event is dedicated to professionals, while on days 23 and 24 it´s open to the general public.
More information on http://www.t-expo.jp/public/