^ Ok that's just unacceptable behaviour
. Not only that , it's dangerous & I would be fearful for my life if I experience something like that in a concert
Last thing you want to expect in attending a concert is seeing other people get hurt or god forbid , someone dying
Attending a concert is a happy occasion . Things like these just soured your mood drastically
Also don't know about Zepp Tokyo but when I was inside Zepp Namba , in the 1st floor they had built in barriers which was good in a way as those who're way at the back , they cannot push their way through the front cos the barriers prevent that from happening