Yoshihide Sasaki, born on 4 October 1987 in Tokyo, is a Japanese singer and songwriter who began his career as a stage actor. He first appeared in theatre productions in 2003 and gained prominence as Kuranosuke Shiraishi in Musical: The Prince of Tennis in 2008, which expanded his public profile. Yoshihide Sasaki debuted as a recording artist on 24 November 2010 with the extended play Spark, released under Marvelous AQL, followed by the mini‑album NeΦ Vocalism on 21 March 2012 via Happinet. His solo discography includes H LIFE (23 April 2013), HIDE out～MOON～ (2 March 2016), DIMENSION (8 September 2021) and the forthcoming DIMENSION 2 (4 October 2025). Singles such as "Itsumo toinari ni iru kimi e" (23 April 2013) and "Happy Birthday" (4 October 2022) were released under the labels Marvelous and EMP, respectively. Yoshihide Sasaki has collaborated with artists like Yūta Furukawa and participated in the project boy band 3Peace☆Lovers, though the group disbanded in 2013. His work has been noted for steady fan engagement and contributions to the Japanese pop‑rock scene, with several releases charting on domestic music lists. He released his 3rd album, DIMENSION 2, on October 4, 2025.