At the Taipei Game Show earlier this year, event areas had girls on stage dancing to pop tunes. But that's not where the real action was.

Taiwanese otage (dancing idol otaku) turned out a blistering performance of "Megu Megu Fire Endless Night". Watch what they do 2 minutes in.

Something tells me these guys practiced. Call it a hunch.

Otage are regulars at idol concerts—the Taipei Game Show, too, it seems.