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Based on the visual novel from Visual Art’s and Key, a video showing the main theme song for the project was posted on the official site for the OVA Planetarian: Snow Globe. The theme is performed by Riko Azuna and the OVA is slated to be released in September this year.
This OVA will be based on a prequel short story titled "Snow Globe," which was released as part of a light novel in a
