Issue: 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.