Sentence:  The ad, which also features her compatriot Kei Nishikori, drew criticism on social media, with many users accusing Nissin of <WSD>whitewashing</WSD> Osaka, whose mother is Japanese. 
Meaning of the word marked with <WSD> tags:  To make over (a person or character, a group, an event, etc) so that it is or seems more white, for example by applying makeup to a person, or by covering over the participation of people of color in an event and focusing on only white participation.