Let's say the video was roughly 7-10 minutes long encompassing the girls performance, the boys partial performance, and finally the confrontation between the two bands since the boys' manger recorded roughly everything. Even with the boys' presumed family clout and influence it can be clearly...
I love how at first blush it's just a happy go lucky chapter. But when you sit and process what's in it you go "Oh, oh dear Lord, this is going to have so many good repercussions for the Demon World." It's so deceptively subtle in how powerful Iruma is.