Ryouki no Ori 2
English name: The Bizarre Cage
Genres: Hentai
Type: OVA, Episodes: 3
Aired: Apr 27, 2001 to Nov 22, 2001
Studio: Studio Kyuuma
Source: Visual novel
Rating: Rx - Hentai
Synopsis:
Masakazu Inouye enters a dark dungeon. The eyes of a girl fill with terror. Gogged and chained, she is unable to defend herself from the horrible assault that follows...

It's another day on the job for Takeshi Saito. He recently started working as a security guard for a high-tech amisement park called Fantasien. However, a bad day at work quickly spirals into a nightmarish maze of murder and mystery. It starts when Saito accidentally breaks a guidance display at work. Saito and Tamami are called into the office of Ms. Amano, his sexy boss. Makoto Kashiwara is sent out to repair the display. However, Kashiwara stumbles across a dark secret...

(Source: NuTech Digital)