Sayaka Mogi’s Happy Hypoxia Concludes With Chapter 15
The story follows a new mother facing a desperate choice when a fire engulfs her hospital.
Futabasha’s Web Action published the 15th and final chapter of Sayaka Mogi’s Happy Hypoxia on Tuesday. The manga began in June 2025.
Futabasha’s Web Action manga website released the 15th and final chapter of Sayaka Mogi’s Happy Hypoxia -The Grey Child- (Happy Hypoxia -Haiiro no Ko-) on Tuesday.
Mogi launched the manga on the site in June 2025. Futabasha published its second compiled book volume on May 28.
The story follows Miyuki, who finally gives birth after eight years of fertility treatment. At the hospital, she meets Mirei, another woman who has just given birth.
Mirei says she dislikes how her own child and other people’s babies look. Miyuki takes this to mean Mirei did not want her child.
A fire then breaks out and begins engulfing the hospital, forcing Miyuki to make a desperate choice.
Mogi’s other works include:
Kuroneko Sensei to Hotsureta Kanja-tachi (The Black Cat Doctor and the Frayed Patients) launched in September 2025. Hayakawa Publishing released its first volume on June 24.
Girl, Meat Girl, an “interspecies coming-of-age sci-fi” manga, ended on February 13. Mogi launched it in Asahi Shimbun Publications’ Nemuki+ magazine in February 2023.
Pupa, Mogi’s horror manga, launched in Comic Earth Star magazine’s inaugural issue in 2011 and ended in December 2013. Earth Star Entertainment published five volumes. It inspired a 12-episode television anime shorts series that premiered in January 2014.
Red Riding Hood’s Wolf Apprentice (Akazukin no Ōkami Deshi) launched in Kodansha’s Bessatsu Shōnen Magazine in September 2017. Mogi published the end of its “first part” in December 2018 and announced she would self-publish the rest.
Kodansha published the third compiled book volume in February 2019. Kodansha USA Publishing released the manga digitally in English, with its third volume arriving in September 2019.
Red Riding Hood’s Wolf Apprentice: Final Testament to the Moon (Akazukin no Ōkami Deshi - Tsuki e no Tsuigon) is the sequel to Red Riding Hood’s Wolf Apprentice. Mogi published its first volume at Tokyo’s Comitia dōjinshi event in May 2019. The digital version debuted in July 2019.
Glacier Bay Books licensed the sequel and published its first English print volume in May 2022. Digital manga service Azuki, now Omoi, added it in August 2022.
Sources: Web Action via ANN
