D.O.
株式会社ディーオー
Company
Primary language: Japanese
a.k.a. Digital Objet
Official website - Wikipedia (ja) - Wikidata - VNStat
Formerly: Adult Inn
Spawned: Silver Bullet Co., Ltd.
Parent producer: Yuuto Group
Parent brand: Contents Traffic Co., Ltd.
Founded in 1990 as the successor to Adult Inn. Became a brand of Contents Traffic in May of 2009.