Hiragino Kaku Gothic Pro Google Font _best_

Roboto is not a Japanese font, but it pairs beautifully with Hiragino fallbacks. Many modern Japanese sites use Roboto for the Latin (English) characters while using a system Japanese font for the rest.

Even though it isn't on Google Fonts, you can still use it in your CSS—but only for users on Apple devices. This is done using the font-family stack: hiragino kaku gothic pro google font