Sayaka Mogi's Happy Hypoxia Manga Ends With 15th Chapter
Futabasha's Web Action published the final chapter on Tuesday; the second compiled volume went on sale on May 28.
Futabasha's Web Action website published the 15th and final chapter of Sayaka Mogi's manga Happy Hypoxia -Haiiro no Ko- on Tuesday, according to Anime News Network.
The series centers on Miyuki, a woman who became a mother after eight years of fertility treatment, and her encounter with another new mother named Mirei. The story includes a fire that breaks out in the hospital, forcing Miyuki to make a desperate choice.
Futabasha released the manga's second compiled volume on May 28.
Earlier work from the creator
Mogi launched Happy Hypoxia -Haiiro no Ko- on Web Action in June 2025. She also launched the manga Kuroneko Sensei to Hotsureta Kanja-tachi in September 2025, and Hayakawa Publishing released its first volume on June 24.
Her horror manga Pupa ran in the inaugural issue of Comic Earth Star magazine from 2011 and ended in December 2013; it inspired a 12-episode anime short series that premiered in January 2014. She also launched the Red Riding Hood's Wolf Apprentice manga in Kodansha's Bessatsu Shōnen Magazine in September 2017, ending its first part in December 2018.
Quick answers
When did Happy Hypoxia -Haiiro no Ko- end?
The 15th and final chapter was published on Futabasha's Web Action website on Tuesday.
How many volumes of Happy Hypoxia -Haiiro no Ko- are out?
Futabasha published the second compiled volume on May 28.