Examples of Success Criterion 1.4.8

Hello,

I would like to ask about Example section of "Understanding SC 1.4.8".

https://www.w3.org/TR/UNDERSTANDING-WCAG20/visual-audio-contrast-visual-presentation.html#visual-audio-contrast-visual-presentation-examples-head

As an example of glyphs, there is a Japanese character of "さ". I really
don't know why the character has been chosen, my native language is
Japanese though.

Best,

Kazuhito
-- 
Kazuhito Kidachi
mailto:kazuhito@gmail.com