After moving to Tokyo for college, Mitsu Haneki discovers that her next-door neighbor is Kaede Hirako, her ex-boyfriend from middle school.

[1] Regarding the casting, Hanaya, the original author of the manga, stated that Suzuki and Kawazu "fit the image" she had in mind for Kaede and Mitsu.

[6] Chikara Honda [ja] plays Professor Watanuki, an original character made for the drama, who appears as an imaginary figure in Kaede and Mitsu's daydreams.

[6] The drama adaptation is directed by Chihiro Ikeda [ja] and Hajime Hatakeyama, with Atsumi Dojō and Nana Yamamoto writing the script.

[4][5][20] The series focuses on Kaede's life in high school, with the original cast from the television drama returning to reprise their roles.

[20] Unlike the original drama adaptation, the spin-off episode was written to portray "conversations between men" and male friendship through Kaede and Kazuha.