Welcome to Komonjo.com



We specialize in Japanese-language books on the Japanese Sword, rare and out-of-print Japanese books.  We also sell Japanese swords and fittings.


Our primary means of advertising and selling is through eBay.  To view our current eBay listings, click here. 


Please contact us at: mmyamaguchi@komonjo.com .



If you are curious about my background, here’s my CV.


This site is owned and operated by

Mike M. Yamaguchi

San Francisco, CA  94105 




Updated: August 2012