ChroNoiR Episode.0 is a oNA (web) anime that premiered in summer 2023, produced by A-1 Pictures.

About the production: the story comes from an original script, there is 1 episode of about 9 minutes and its current status is "finished".

Its main genres are action, fantasy and supernatural, with themes such as Vampire and VTuber.

On AniList, ChroNoiR Episode.0 has an average score of 67%, a good score, and appears on 2,241 users' lists.

The anime tells a story from 150 years ago in the town of Planie. A strange disease that turns humans into the undead has spread throughout the land, causing Planie to become known as the cursed city. The priest Kanae lives in a church on the outskirts of town. Ever since he arrived at the town, the number of cases of the disease have decreased. The fate of the town changes when a mysterious man accompanies Kanae. (Source: Anime News Network)

Official synopsis from AniList.