If you want to use fonts that Japanese sites typically use I would start by browsing some of the more popular Japanese sites and using things like Firebug or the Chrome developer tools to examine the CSS and see what fonts they reference. But those fonts give a kind of Western look to Japanese characters. I am no font/design expert, but just about every Japanese PC should have basic Latin fonts like the ones you mentioned installed, so they will work. So the current recommended practice is like this, font-family:'ヒラギノ角ゴ Pro W3', 'Hiragino Kaku Gothic Pro',Osaka, 'メイリオ', Meiryo, 'ＭＳＰゴシック', 'MS PGothic', sans-serif Meiryo and Hiragino's order is, because Mac users may have Meiryo from MS-Office, and Hiragino is more familiar and matching well on Mac, better by starting Hiragino series. Some old browsers could not understand those font names in English, some others do not recognize the names in Japanese, so it is safe to write both in Japanese and English. For older versions such like Windows XP, it is good to add former default fonts MS Gothic(or MS Mincho)/Osaka. The latest ones are Meiryo and Hiragino Kaku Gothic Pro. Most Japanese websites use default font sets provided on Windows or Mac. As a result of it, there are very few variations in Japanese fonts, and Japanese users also care about fonts less than Latin-character users. Usually Japanese font has 8,000-16,000 glyph so making new fonts means you need to make at least 8,000 glyph, which is pretty heavy task. Web-font for Japanese, though there are few providers exist, is not really practical as you found the size of the font data is too big to download.

Japanese looking english font