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1122: For a Happy Marriage, simply known in Japan as 1122, is a Japanese manga series written and illustrated by Peko Watanabe. It was serialized in Kodansha‘s seinen manga magazine Monthly Morning Two from September 2016 to May 2020, with its chapters collected in seven tankōbon volumes.

A seven-episode live-action television drama adaptation premiered in June 2024.

Characters

Otoya Aihara (相原二也, Aihara Otoya): Portrayed by: Masaki Okada
Ichiko Aihara (相原一子, Aihara Ichiko): Portrayed by: Mitsuki Takahata
Mizuki Kashiwagi (柏木美月, Kashiwagi Mizuki): Portrayed by: Nanase Nishino
Shiro Kashiwagi (柏木志朗, Kashiwagi Shirō): Portrayed by: Kengo Kora
Hiro Kashiwagi (柏木ひろ, Kashiwagi Hiro): Portrayed by: Sōjirō Chiba
Megumi (恵): Portrayed by: Kurumi Nakata
Yuri (ユリ): Portrayed by: Misato Ugaki
Tamae (たまえ): Portrayed by: Kaho Tsuchimura
Rei Ikebata (池端礼, Ikebata Rei): Portrayed by: Hokuto Yoshino
Tōko Aihara (相原とう子, Aihara Tōko): Portrayed by: Akiko Kikuchi
Mizuki’s mother (美月の母, Mizuki no haha): Portrayed by: Yumi Morio
Otoya’s mother (二也の母, Otoya no haha): Portrayed by: Yoshiko Miyazaki
Ichiko’s mother (一子の母, Ichiko no haha): Portrayed by: Jun Fubuki

Manga

Written and illustrated by Peko Watanabe, 1122: For a Happy Marriage’ was serialized in Kodansha‘s seinen manga magazine Monthly Morning Two from September 21, 2016, to May 22, 2020. Kodansha collected its chapters in seven tankōbon volumes, released from May 23, 2017, to July 20, 2020.

In North America, the manga is licensed for English digital release by Kodansha USA. The seven volumes were released from October 22, 2019, to July 6, 2021.

Volumes

No.	Original release date	Original ISBN	English release date	English ISBN
1	May 23, 2017	978-4-06-388733-4	October 22, 2019	978-1-64659-082-7
2	November 22, 2017	978-4-06-510450-7	November 12, 2019	978-1-64659-111-4
3	May 23, 2018	978-4-06-511481-0	December 10, 2019	978-1-64659-159-6
4	November 22, 2018	978-4-06-513570-9	January 14, 2020	978-1-64659-204-3
5	May 23, 2019	978-4-06-515482-3	February 11, 2020	978-1-64659-231-9
6	November 22, 2019	978-4-06-517757-0	March 31, 2020	978-1-64659-278-4
7	July 20, 2020	978-4-06-519911-4	July 6, 2021	978-1-63699-212-9

Drama

A live-action television drama adaptation was announced on November 22, 2023. The drama is produced by Lat-Lon and directed by Rikiya Imaizumi, with scripts written by his wife Kaori and planning and production by Junko Satō, and stars Masaki Okada and Mitsuki Takahata as Otoya and Ichiko Aihara, respectively. It premiered its first three episodes on Amazon Prime Video on June 14, 2024, while episodes 4 and 5 are set to be available on June 21 and episodes 6 and 7 on June 28.

Reception

1122: For a Happy Marriage was nominated for the 12th Manga Taishō in 2019. In December 2019, Brutus magazine listed 1122: For a Happy Marriage on their “Most Dangerous Manga” list, which included works with the most “stimulating” and thought-provoking themes.

1122: For a Happy Marriage
First volume cover
Genre	Romance
Manga
Written by	Peko Watanabe
Published by	Kodansha
English publisher	NA: Kodansha USA (digital)
Magazine	Monthly Morning Two
Demographic	Seinen
Original run	September 21, 2016 – May 22, 2020
Volumes	7
Television drama
Directed by	Rikiya Imaizumi
Produced by	Junko Satō
Written by	Kaori Imaizumi
Studio	Lat-Lon
Licensed by	Amazon Prime Video
Original run	June 14, 2024 – June 28, 2024
Episodes	7