IOSYS

IOSYS is a doujin circle founded by ARM in 1988. It's known as being the one of the most popular and oldest circles affiliated with Touhou Project. It is also used as a record label, radio network and store.

Members

 * ARM - Composer, Arranger, Founder.
 * しゃちょう/夕野ヨシミ：Lyricist, Designer.
 * D.watt/七条レタス：Composer, Arranger, Lyricist, Screenplay, DJ.
 * void/コバヤシユウヤ：Composer, Arranger.
 * uno/RoughSketch：Composer, Arranger, DJ.
 * まろん：Composer, Arranger, DJ, Lyricist.