Circle is the first Korean-language studio album (second overall) by South Korean singer Onew. It was released on March 6, 2023, through SM Entertainment. The album contains ten songs, including the lead single, "O (Circle)". Circle is Onew's first Korean release after almost a year, following on from his 2022 EP Dice.[1] In the interim, Onew released the Japanese-language studio album Life Goes On and embarked on a tour across Japan.