Like their 2013 appearance on the “back stage” live streaming, Kiiyan and e-zuka will be taking part in the Saturday Nico Nico broadcast from TM Revoltion’s Inazuma Rock Festival.

The Nico Nico channel is here, and broadcast actually seems to start the night before (pre-show activities, presumably). Not sure what time Granrodeo will appear, but before their 14:30 stage time, most likely.