Shin (シン) (born September 4th, 1987; Nagano, Japan) is a Japanese singer member of the popular JRock band ViViD. He is the band's vocalist and lyricist.

Shin is probably best known for his activities as the vocalist of 秋葉原少年団☆電脳ロメオ (Akihabara Shounendan☆Dennou Romeo). Dennou Romeo was formed in April of 2006, and they were around for almost two years until they disbanded in January 2008. During these two years Dennou Romeo released two maxi-singles, one two-song single and one live-only single which contained only one song.

Ryoga (怜我) (born November 22nd, 1987; Japan) is a Japanese artist member of the popular JRock band ViViD. He is one of the band's guitarist.

Before he joined ViViD, Ryouga was in fact called さち (Sachi). He started out sejak joining his friend's band M.cry as the support guitarist in June 2008, but he left the band already in October. (Actually, M.cry wasn't exactly his first band, but since he's keeping his first band secret I naturally can't mention the band's name here. D: ) Around the same time, he was doing lives with a session band called 大胸筋矯正サポーターズ (Daikyou...