It seems no Japanese magicians here and No one mention this sad news still now. So I'll report this sad news.
Sorry to report Tenkai Matsuura (Stage name of Yasunaga Matsuura : a.k.a. "Tenkai Jr.") passed away on Sunday the 27th of January 2008. He was 72.
I don't know how many people know him in person,but our cheif Genii wrote about him in MAGIC :
"Tenkai's huge legacy, a good deal of which is unknown in America, has been left in the care of his student (who was given the name of his teacher) Tenkai Matsuura. Matsuura's task is formidable in that he must sort through thousands of pages of notes which his teacher left behind and, with Ton Onosaka acting as translator, demonstrate the tricks to me in such a way that all of Tenkai's subtle thoughts are clearly conveyed. " (MAGIC, March 1994)
He was famous in Japanese magic and you can find his works on old Genii and MAGIC.