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Visitors arrive at the Osaka Expo on Yumeshima, an artificial island, on April 13. The six-month event showcases innovation and culture from dozens of countries. © Rodrigo Reyes Marin

A member of staff gets to work on the first day of the Osaka Expo. © Rodrigo Reyes Marin

Visitors arrive on first day of the Osaka Expo. © Rodrigo Reyes Marin

Visitors arrive on first day of the Osaka Expo. © Rodrigo Reyes Marin

Visitors take in the view of pavilions during the first day of the Osaka Expo. © Rodrigo Reyes Marin

A security robot at the Osaka Expo. © Rodrigo Reyes Marin

Rodrigo Reyes Marin is a freelance photojournalist and videographer based in Tokyo.