Ryūji Sakai
Birthday: August 12, 1977
Ryuuji Sakai (坂井 竜二, Sakai Ryūji) is a Japanese singer, composer and lyricist that has been active since 2014. He is also the vocalist of the band "The ARROWS". He often works with Shingo Yamazaki on the "THE iDOLM@STER" series.
