3L is the main alias of 安保さゆり (Sayuri Anpo), a well-known vocalist, and occasionally lyricist, of the japanese doujin music scene. She has performed under various aliases, such as 悠杏李 (Yu Anri), あんぽりん (Anporin) or Unknown-Poly, for many doujin circles over the past years. She's also a member of NJK Record since 2008. 3L is also the backing vocalist for 民安★ROCK.