Tenshi Kikou Shikkoubu Tamashii Kyuusai-ka

Supernatural phenomena beyond human comprehension, seemingly the work of spirits. As these incidents rapidly increased, they came to be known as "Ghosturbance Cases" and became part of everyday life. The "Angelic Agency," an organization investigating these cases, assigns its officer, Tsujitsuma, to a murder investigation. While Tsujitsuma approaches the case as part of his duties, the story takes an unexpected turn. The key to unraveling all these incidents lies in—"memories."