Apple has used Hiragino fonts as the default Japanese system font since Mac OS X Snow Leopard (2009) and iOS 9. Therefore, any iPhone, iPad, or Mac user can render this font without downloading extra files.
This is one of the heaviest weights in the family, making it ideal for impactful titles, headlines, and display use where high visibility is required. Design Philosophy: hirakakustd w8 font
Due to its heavy weight, HiraKakuStd W8 is built for impact. It is not intended for long blocks of body text, but it excels in the following areas: 1. Digital Headings and UI Titles Apple has used Hiragino fonts as the default
The "W8" designation places this font at the end of the weight spectrum. making it ideal for impactful titles