Planetarian is a oNA (web) anime that premiered in summer 2016, produced by david production.

About the production: the story comes from a visual novel, there are 5 episodes of about 19 minutes and its current status is "finished".

Its main genres are drama, fantasy and sci-fi, with themes such as Robots, Post-Apocalyptic, Artificial Intelligence and Astronomy.

On AniList, Planetarian has an average score of 73%, a good score, and appears on 30,857 users' lists.

The franchise continues in or follows from: planetarian: Snow Globe.

Hoshino Yumemi is a companion robot working at an abandoned planetarium. It’s been thirty years since her last customer, but she continues to wait. When a customer finally appears, she enlists his help to fix the planetarium so she can show him the stars. (Source: Crunchyroll)

Official synopsis from AniList.