It is not unusual while traveling by train around Tokyo to have interruptions in the schedule, mostly credited to a euphemistic “human body accident.”
Train lines are interconnected and during the morning rush hour when millions of people are commuting to work, one train line stopping operations for 30 minutes means re-routing of many people to other already packed train lines. (In our house “crowded” means you can feel five other people up against you. When you feel eight bodies, then it’s deserving of the “crammed” category and deserves sympathy from those listening to your story.)
Last Thursday morning we reached a new level. Two ladies were forced to get off the train together at one of the lady’s stop because the necklace of one had was caught and snagged in the sweater of the other. Now that’s a category all its own.