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 Teach Yourself JapaneseThis page explains the Japanese language in English.  I focus mainly on grammar.  It has had more than 900,000 visitors.
 
 The Gate of JapaneseWith this CGI program, you can display Japanese web sites without having Japanese fonts.  You have nothing to install, just input the address of a Japanese site you want to see and you'll see it on your screen.
 
 Number Systems of the World (updated)I am collecting number systems of world languages.  This page has 69 number systems now.
 
 Introspective notes on the Japanese language (Japanese)There are 21 articles on the Japanese language and its grammar.
 
 Japanese filters (Japanese)The CGI programs in this page convert Japanese text of other web sites.  Written in Japanese.
 
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 About the AuthorThere is some of my personal information in this page.
 
 MusicThis page has a list of CDs I have.  Most of them are Prince's and P-Funk's.
 
 My Trip to Hungary (Japanese)I went to Hungary in 1997 to meet an email friend there.  This page has my diary during my trip and some photos of Hungary.  Written in Japanese.
 
 My Trip to America (Japanese)I went to the U.S. by myself in 1998, and I write about my trip in this page.  Written in Japanese.
 
 Opinions (Japanese)This page lists some of my opinions on social issues and movies.  Written in Japanese.
 
 Interesting Books (Japanese)This page explains interesting books I have bought.  Most of them are about social issues and science.  Written in Japanese.
 
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 CG Gallery: Vortex of InfinityThis page shows some computer graphics I have made.  I don't use any graphic software, and I use pure mathematical ways to draw pictures.(favorite one)
 
 
 Mandelbrot MicroscopeThis Java program shows the two major fractals, Mandelbrot Set and Julia Sets.  Its calculation is pretty fast and it doesn't take a second on up-to-date computers.
 
 Fractal Clouds and SeaThis Java program shows clouds and sea with islands using 1/f noise fractal.
 
 Java PainterThis is my trial to make drawing software with Java.  I don't update it now.
 
 NecktiesIn this page I show my neckties, most of which are made by a company named Manhattaner's.
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 A Counter ProgramThis page contains a program to display a counter on a web site and its explanation.  The program doesn't work on some Internet providers.
 
 Perpetual Calendar 
This CGI program shows a calendar of any year you want to see.
 
 Alphametic PuzzleThis Java applet solves alphametic puzzles.  There's no explanation but I think it's easy to understand how to use it.
 
 Number Place PuzzleThis Java applet solves number place puzzles.  There's no explanation either.
 
 Computer AlgorithmsThis program outputs a fast code of division on Intel's 386 series CPUs.  Currently people don't use assembler, so it is not so useful.
 
 NPS WPS Enhancer 1.82 for OS/2 
NPS WPS Enhancer was quite successful free software several years ago among OS/2 users.  I'm sorry I haven't updated it recently.
 
 Other Freeware for OS/2This page lists other freeware (free software) for OS/2.
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 Dobon Standardization Committee (Japanese)This page explains the rule of Dobon, a playing-card game.  Probably understood only by my friends. ;-)  Written in Japanese.
 
 Internet Search IndexYou can use several Internet search engines from this page.
 
 Links (Japanese)This page has general links to other site.  Each of my site listed above often has its own links.
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