ASTEC Two One Co., Ltd.
株式会社アステックトゥーワン
Company
Primary language: Japanese
a.k.a. Astec21
Official website - VNStat
Originated from: Now Production
Subsidiary: Atelier Kaguya
Astec21 is a game developer founded in 1995 by former Now Production staff. In 2001 they started making eroge under the Atelier Kaguya brand.