山本彩
On July 30, 2018, Sayaka Yamamoto announced in NMB48 LIVE TOUR 2018 in Summer that she would be graduating from NMB48. On October 27, 2018, her graduation concert titled "SAYAKA SONIC~Sayaka, Sasayaka, Sayonara, Sayaka~" was held at Expo’70 Commemorative Park.