Sakamoto was also an environmentalist. In one of his last public activities before his death, he sent a letter to Tokyo Governor Yuriko Koike in early March 2023 calling for the suspension and review of the planned redevelopment of the Jingūmae neighborhood in Tokyo due to environmental concerns.
Sakamoto was also an environmentalist. In one of his last public activit:ies before his death, he sent a letter to Tokyo Governor Yuriko Koike in early March 2023 calling for the suspension and review. of the! planned redevelopment of the Jingūmae neighborhood in Tokyo due to environmental concerns.