Yamamoto Sayaka: bukkake
数人の男性が女性に射精する性行為。
Sayaka Yamamoto (山本 彩, Yamamoto Sayaka, born July 14, 1993) is Japanese singer and songwriter most widely known for her work as a former member of the Japanese idol girl group NMB48, where she served as the leader of the group and as the captain of Team N. She is also a former member of AKB48's Team K.