Nippon Foundation’s head Yohei Sasakawa cosplayed as One Piece's Luffy
Tokyo-based non-profit grant-making organization Nippon Foundation and Cosplay Umigomi Zero Executive Committee have launched a new campaign to spread recognition of the ocean waste (umigomi) problem in order to protect Japanese seas, which are also used as photo shooting spots by many cosplayers.
In cooperation with World Cosplay Summit, they held its first public event "Cosplay de Umigomi Zero Great Mission!" at and around Tokyo Tower on June 8, 2019. About 430 cosplayers gathered to clean up the streets around the area. The official YouTube channel of The Japan Times, Japan's largest & oldest English-language daily newspaper, has posted a video report about their activities on the day below.
Source: The Japan Times official YouTube channel, "Cosplay Umigomi Zero Executive Committee" press release