Nil Admirari no Tenbin[b] is a 2018 Japanese dark fantasy[1] anime television series based on a video game of the same name created and developed by Otomate for PlayStation Vita.

She begins to see an "aura" the books emit and decides, after some debate, to join the Bureau, assisting them in their duties, leaving behind her old life.

This included Masahiro Takata as director at studio Zero-G, Tomoko Konparu overseeing the scripts for the series, Yukie Sakō as character designer, and Tomoki Hasegawa as music composer at Pony Canyon.

[1] Paul Jensen, Theron Martin, Nick Creamer, and Rebecca Silverman reviewed the first episode for the ANN Spring 2018 preview guide.

Jensen argued that the episode has a "whiplash-inducing tonal swing" and a solid entry in the genre, with decent writing and "an intriguing premise", while Martin called it a "period piece" which is a "reverse harem", and a "middling show", and Creamer called it an "extremely average" series, which has a "pretty standard" narrative.