Kodama was born on September 26 in Sasebo, Nagasaki Prefecture, Japan.
[6] In 2012, Kids on the Slope was adapted into a television anime series by director Shinichirō Watanabe.
[4] Following Kids on the Slope, Kodama's wrote the manga series Tsukikage Baby, a drama focused on events in a traditional Japanese town from the perspectives of several different families.
[9] Her next series Chiisako no Niwa, also published in Monthly Flowers, ran from 2017 to 2018,[10][11] and placed eighth in the 2019 Kono Manga ga Sugoi!
[12] Her most recent work, Ao no Hana, Utsuwa no Mori, has been published in Monthly Flowers since 2018.