Yuugen Kaisha
English title: Phantom Quest Corp.
Japanese title: 幽幻怪社
Type: OVA
Episodes: 4
Source: Original
Genres: Action, Adventure, Comedy, Supernatural
Studios: Madhouse
Duration: 29 min per ep
Rating: R+ - Mild Nudity

In a country where companies are categorized into many subdivisions and corporations, only one of them is a ghost corp—the Phantom quest corp. When otherworldly supernatural phenomenon threatens the city and its populace, Ayaka Kisaragi and her employees are on the job to fight any and all supernatural menace.

(Source: ANN)