Asteroid in Love

During her childhood, a girl named Mira Konohata befriends Ao Manaka, who she believes is a boy, and makes a promise with Ao to discover an asteroid. Upon entering high school, Mira joins the earth sciences club, a merger of the school's astronomy and geology clubs, and reunites with Ao, who she discovers is actually a girl. Alongside their fellow club members, Mira and Ao take part in various astronomical and geological activities in the hopes of one day discovering an asteroid.

Mira Konohata (木ノ幡 みら, Konohata Mira) rusty-red hair, gradient blue-to-yellow eyes Voiced by: Tomoyo Takayanagi (Japanese); Lindsay Seidel (English) The main protagonist of the story, who joins the earth sciences club in her first year and becomes vice-president in her second year. She took an interest in astronomy after meeting Ao as a child and is determined to discover an asteroid with her. Ao Manaka (真中 あお, Manaka Ao) blue-violet hair, cyan eyes Voiced by: Megumi Yamaguchi (Japanese); Morgan Berry (English) An astronomy fanatic who was initially mistaken by Mira to be a boy when she was a child. She becomes the club's treasurer in her second year, when she also moves in with Mira to fulfill her dream of finding an asteroid with her while her parents are away. Mai Inose (猪瀬 舞, Inose Mai) blond-yellow hair, grass green eyes Voiced by: Maria Sashide (Japanese); Bryn Apprill (English) Earth sciences club member and former member of the geology club, nicknamed "Ino-senpai", who becomes the new club president after Mari steps down. She has a crush on Ibe. Mikage Sakurai (桜井 美景, Sakurai Mikage) red hair, red eyes Voiced by: Nao Tōyama (Japanese); Terri Doty (English) Vice-president of the earth sciences club before graduation and former president of the geology club, nicknamed "Sakura". Mari Morino (森野 真理, Morino Mari) gray hair, brown eyes Voiced by: Sumire Uesaka (Japanese); Natalie Rose (English) President of the earth sciences club before graduation and former president of the astronomy club, nicknamed "Monroe-senpai". She aspires to become an astronaut. Moe Suzuya (鈴矢 萌, Suzuya Moe) dark violet hair Voiced by: Reina Ueda (Japanese); Madeleine Morris (English) Mira's childhood friend, known as Suzu for short. She is particularly fond of girls and has a crush on Misa. Her family owns a bakery. Yuki Endō (遠藤 幸, Endō Yuki) brown hair, brown eyes Voiced by: Lynn (Japanese); Megan Shipman (English) Advisor for the earth sciences club. Yuu Nanami (七海 悠, Nanami Yuu) green hair, blue eyes Voiced by: Sumire Morohoshi (Japanese); Kristen McGuire (English) A girl who joins the club in Mira's second year, nicknamed "Nana". She wishes to pursue meteorology to help others after seeing her aunt suffer from flood damage. Chikage Sakurai (桜井 千景, Sakurai Chikage) red hair, red eyes Voiced by: Konomi Kohara (Japanese); Apphia Yu (English) Mikage's younger sister, nicknamed Chika, who joins the club after Mikage graduates. She shares her sister's enthusiasm for geology. Misa Konohata (木ノ幡 みさ, Konohata Misa) purple hair, gradient violet-to-yellow eyes Voiced by: Mai Fuchigami (Japanese); Dani Chambers (English) Mira's older sister who is student council president until she graduates. Megu Suzuya (鈴矢 芽, Suzuya Megu) blue hair, blue eyes Voiced by: Natsu Yorita (Japanese); Corey Pettit (English) Suzu's younger sister. Sayuri Ibe (伊部 小百合, Ibe Sayuri) green hair, brown eyes Voiced by: Aoi Koga (Japanese); Sarah Wiedenheft (English) President of the newspaper club and Mai's friend, who prefers to be called "Eve". Ayano Usami (宇佐美 綾乃, Usami Ayano) brown hair, red eyes Voiced by: Megumi Nakajima (Japanese); Dawn M. Bennett (English) Newspaper club member and Ao's classmate.

Written and illustrated by Quro, Asteroid in Love was serialized in Houbunsha's Manga Time Kirara Carat magazine from January 28, 2017, to June 28, 2024. Its chapters have been collected into six tankōbon volumes.

An anime television series adaptation was announced in the April issue of Manga Time Kirara Carat on February 28, 2019. The series was animated by Doga Kobo and directed by Daisuke Hiramaki, with Yuka Yamada handling series composition, and Jun Yamazaki designing the characters. Takurō Iga composed the series' music. It aired from January 3 to March 27, 2020, on AT-X, Tokyo MX, SUN, KBS, TVA, and BS11. Nao Tōyama performed the series' opening theme song "Aruiteikō!" (歩いていこう！; "Let's Walk There!"), while Minori Suzuki performed the series' ending theme song "Yozora" (夜空; "Night Sky"). It ran for 12 episodes. Crunchyroll simulcasted the series with English subtitles, while Funimation began streaming an English dub on March 6, 2020.

Characters from the series appear alongside other Manga Time Kirara characters in the 2020 mobile RPG, Kirara Fantasia.

The amateur asteroid search project COIAS (a backronym for "Come On! Impacting ASteroids") is named after the manga Koisuru Asteroid (abbreviated KoiAs). Its first numbered discovery, 697402 Ao, is named after the character Ao Manaka. Other COIAS discoveries have been named Quro after the manga artist and Hoshizaki after the school where the manga is set.