Moshi-moshi did not have a booth but they did advertise with postcards in the attendee bags. They have Japanese goodies and art and are located here:
http://www.moshi-moshi.com/ - 811 E Burnside St, Portland, OR 97214
Billy Galaxy is owned by the same folks and has a lot of vintage toys:
http://www.billygalaxy.com/ -
912 W. Burnside / Portland / OR /
Dark Horse comics are sold at all Things from another World stores:
http://www.tfaw.com/ - Milwaukie Store 10977 SE Main Street Milwaukie, Portland Store 4133 NE Sandy Blvd. Portland, Beaverton Store 4390 SW Lloyd Ave. Beaverton
Kinokuniya Bookstore is located in the Uwajimaya store in Beaverton:
http://www.uwajimaya.com/upb/ - 10500 SW Beaverton-Hillsdale HWY
That's all I know right off!