The issue started when Yesung, who was travelling around Osaka, uploaded a photo of himself stading on the railway tracks next to a small train station. He uploaded the picture and tweeted it with the comment "On the railway tracks".
Fans replied to the photo saying "It's forbidden to stand on the tracks, please delete this picture!" and "It's forbidden to enter the tracks. It'll become an issue so please delete the photo!".
The station where the photo was taken is unknown but it thought to be somewhere along the Hankai Line.
After Yesung had deleted the tweet fans were seen commenting "Thankfully Yesung deleted the tweet", "I'm afraid this will become an issue...", "Thankfully he deleted the picture before it got noticed and became an issue" and "The speed of the cooperation between ELFs and Yesung!! I can relax now."
In 2017 the talent Matsumoto Iyo and Hayami Yu entered a railway track in Kyoto and they were accused of breaking the Railway Operations Act and had their case sent to the prosecutors.
If found guilty of breaking such law one can be sentenced to a maximum of 2 years in prison or a fine up to 200.000 yen ( 〜$1800).
Source: Breaking News Japan, translation by me.
All the jpn comments on the post are all about protecting Yesung... ugh