山本彩
On April 17, 2019, Sayaka Yamamoto released her first solo single "Ichirinsou". On September 4, 2019, Yamamoto released her second single "Thorn". On September 17, 2019, Yamamoto announced on her YouTube channel that her third single "Tsuioku no Hikari" would be released on November 20, 2019, with her third album "α" ("Alpha") following on December 25, 2019. On October 28, 2020, Sayaka Yamamoto released her forth solo single "Zero Universe".