Try to imagine this scenario occurring in the US, or perhaps most any country other than Japan: You leave a camera bag with US$7,000+ of gear in it sitting in a train station.
Station personnel may find it that night, or it more likely sits there till morning. The rail line people go looking for it, find it, & forward it to a more convenient location for you to pick it up the next day. When you retrieve & open it, everything is exactly as you left it, all US$7,000+ of gear undisturbed & still inside.
This is a very common story in Japan.