Yeah, I haven't heard much about postgraduate education for the deaf in japan. I tried to do an internet search but my findings haver been very limited. Here are a couple of links to the University of Tsukuba, looks like
they have programs for the deaf and blind in art, technology, and
engineering.
’}”g‹Zp’ZŠú‘åŠw ŠT—v 2004
Tsukuba University of Technology
In major universities I believe they provide support for deaf students in
mainstream classes but not much in courses directed specifically for deaf
students. At times I've found this country to be very narrow minded that
hold low expectations for people that are "different."