As an ethnomusicologist I am familiar with the fan culture surrounding idols, but have never seen it up close. I do have to say that they are extremely respectful, taking turns approaching the stage to whoop and call out to their favorite idol... but it was truly odd. Seeing them all sit on the floor when the girls were talking (in typical, high-pitched kawaii fashion) was quite a sight.
After the live show, I was taken around a few of the major maid cafes run by one of our clients. Yet more high-pitched voices and pouting ('Master, Milady, are you leaving already?!'). I did my utmost not to give into my desire to scream about the effects of sexualizing infantilized women, but it was a close thing.
As I walked back to Iwamoticho station, slightly dazed, I came across the highlight of my night: a congregation of weird vending machines.
Just in case you suddenly need a jar of assorted bells, a toy train or yakitori in a can. Some of the items on sale had been taken from their original packaging and placed into plastic jars (like the chocolate soccer balls and candy above).