Sayaka Yamamoto
On 10 March 2011, she was selected to form NMB48's Team N. Watanabe and Sayaka Yamamoto were chosen as a "senbatsu" member for AKB48's 21st single "Everyday, Katyusha". Watanabe held an AKB48 Team B concurrent position from March 2012 to April 2014. Following that, she has a concurrent position in SKE48's Team S since April 2014.