Mr. Hashiyama uploaded the video of the former group show, Pou group show at Hyogo Prefectruarl Museum of Art in You Tube.
I uploaded that video to my web pabe, Art 2013 with his permission. Please click the link below.
https://kikukosakota.squarespace.com/new-gallery/51fdvas76i0jcr58xvybpq01tp5iei