Otonanajimi
Introduction


 is a Japanese [manga](/wiki/Manga "Manga") series written and illustrated by [Aya Nakahara](/wiki/Aya_Nakahara "Aya Nakahara"). It was serialized in [Shueisha](/wiki/Shueisha "Shueisha")'s [*josei* manga](/wiki/Josei_manga "Josei manga") magazine *[Cocohana](/wiki/Cocohana "Cocohana")* from March 2019 to October 2021, with its chapters collected into eight *[tankōbon](/wiki/Tank%C5%8Dbon "Tankōbon")* volumes. A [live action](/wiki/Live_action "Live action") film adaptation premiered in Japan in May 2023\.


When did the manga serialization begin?