http://www2.wind.ne.jp/maniackers/designfont.htmlor
http://www.moorstation.org/typoasis/asia/asf1.htmlor
if you've installed the japanese language options for windows xp or mac osx then it should be in your fonts directory (ms gothic for pc and osaka for mac.)
just find the kanji you want online, copy and paste that text into photoshop (you must have asian text options turned on) and choose the font.