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.

Unaired anime-original OVA bundled with 12th volume of the Hitsugi no Chaika novel.

The second season of Bye Bye, Earth. Adonis returns, empowered by darkness, as Belle awakens from her slumber — their fates bound by an inescapable destiny.