Denshi Meuginin passed in the Tohoku earthquake that occurred back in March of this year.
He was set to participate in Game Legend 14 (a retro game only event he attended regularly) when it was announced on the event's homepage that he had been listed among the dead. Unfortunately I can no longer find the original announcement.
The event coordinators are handling mail communication with his family so I hope that is a strong enough source. Second post down from top.
http://www.geocities.jp/zed_gamelege...80512ikou.html