My Happy Marriage Special Trailer Reveals Opening Theme by Riria.

Kadokawa has released the main promotional video for the upcoming three-episode special of the My Happy Marriage anime. The trailer unveils the opening theme song, titled "Shiawase de Namida ga Deru no wa," performed by Riria. The special is scheduled to premiere on October 25.

The production team returns with key staff members from previous seasons. Director Takehiro Kubota and series composer return at Kinema Citrus, alongside character designer Shōko Yasuda and composer Evan Call. Voice cast members Reina Ueda and Kaito Ishikawa reprise their roles as Miyo and Kudo, while M.A.O joins the cast as Kimio Nagaba.

The ending theme is performed by Kashitarō Itō. This release follows the second season, which aired in January 2025 across multiple Japanese broadcasters and streaming platforms including Netflix.