Light novels Written by ,
My Happy Marriage began publication online via the user-generated novel publishing website
Shōsetsuka ni Narō. In June 2021,
Yen Press announced that it licensed the novels for English publication.
Volumes Manga A
manga adaptation illustrated by began serialization online via
Square Enix's
Gangan Online service on December 20, 2018. As of March 2026, six volumes have been released. Square Enix published an art book on August 10, 2023.
Volumes • Special Short Story }} }} • Special Short Story }} }} • Special Short Story }} }} • Special Short Story }} }} • Special Short Story }} }}
Live-action film A
live-action film adaptation was announced on April 25, 2022. It is directed by
Ayuko Tsukahara, with the screenplay written by , and music composed by . The film was released in Japan on March 17, 2023, by
Toho. Idol group
Snow Man performed the theme song titled . The film had its North American premiere at the Toronto Japanese Film Festival on June 10, 2023, under the title
As Long as We Both Shall Live. It was also screened at the
Fantasia International Film Festival on August 8 the same year.
Anime An
anime adaptation was announced on April 5, 2022. It was later revealed to be a television series produced by
Kinema Citrus and directed by Takehiro Kubota, with supervision and storyboards handled by Takao Abo, scripts written by Ami Satō, Takahito Ōnishi and Momoka Toyoda, character designs by , and music composed by
Evan Call. The series aired in Japan from July 5 to September 20, 2023, on
Tokyo MX and other networks, with
Netflix simulcasting the series globally, while
Bilibili simulcasted it in mainland China. The opening theme song is by , while the ending theme song is by . The thirteenth episode was bundled as an
original video animation (OVA) with the special edition of the eighth light novel volume, which was released on March 15, 2024. The OVA premiered on Netflix on November 22 of the same year. A second season was announced after the airing of the twelfth episode.
Masayuki Kojima co-directed the season with Takehiro Kubota, while Ami Satō was the sole head writer and also co-wrote the script with Minori Hashiba, Fūka Ishii, and Momoka Toyoda. The season aired from January 6 to April 9, 2025. The opening theme song is by Riria, while the ending theme song is by Kashitarō Itō. A new anime project was announced after the airing of the second-season finale. A three-episode special is set to premiere in Japan and stream worldwide on Netflix in 2026.
Stage play A stage play adaptation titled
Watashi no Shiawase na Kekkon: Teito Rikugun Okutsuki Kitan was announced on June 9, 2023. It featured an original story, with Kaori Miura serving as the director and writer, and Taka composing the music. Akumi Agitogi, the original author, also cooperated in the production. The stage play ran at Theater 1010 in Tokyo from August 11–20, 2023. == Reception ==