On the evening of the 13th, the Osaka Metro Chuo Line, which connects to the nearest station for the Kansai Expo (a major international exhibition held in Osaka), temporarily suspended all services. As a result, the entrances to the stations were closed, leading to significant congestion as many attendees attempted to leave the expo site without access to the subway.
The Kansai Expo, officially known as the World Expo 2025, is a highly anticipated event showcasing innovations and cultures from around the world, drawing large crowds to the area.
Source: www3.nhk.or.jp