Koisuru Asteroid: KiraKira Zoukan-gou
Type: ONA, Episodes: 12
Aired: Jan 4, 2020 to Mar 27, 2020
Source: 4-koma manga
Rating: PG-13 - Teens 13 or older
Synopsis:
Mini anime of Koisuru Asteroid where characters explain astronomy and geology. Later included in the Blu-ray/DVD.