is a former member of multiple Japanese idol girl groups. She is a former member of NMB48's Team BII, and a former member of SKE48's Team S. She was also on AKB48 Team B.
Watanabe passed NMB48's first-generation auditions on 20 September 2010, and debuted on 9 October the same year. Her theater debut was on 1 January 2011.
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.
In AKB48's 2013 general elections, Watanabe placed 15th. In AKB48's Janken Tournament in 2014, she won first place, and had a solo debut. Her first solo single, "Yasashiku Suru Yori Kiss o Shite", was released on 24 December 2014.
On March 26, 2015, it was announced that her concurrent position in SKE48 would be canceled. On April 13, 2016, she announced her graduation. On July 3 to 4, 2016, Watanabe's graduation concert titled "Until The End Warukë, I'm Sorry" was held at Kobe World Memorial Hall. Watanabe graduated from the group and had her last stage performance on August 9, 2016.