The anime that turned dating advice into life-or-death missions isn’t done yet. Marriage Toxin has been confirmed for a second season, with the news dropping right at the end of the 13th and final episode of season 1 when it aired on June 30, 2026. The announcement came from Bandai Namco and Shueisha, and the new run is slated for 2027.
If you skipped the first season, here’s the pitch: Gero is a card-carrying member of the Poison Master clan and a deadly assassin who happens to be hopeless at romance. When his sister nearly gets pushed into an arranged partnership to keep the family lineage going, Gero throws himself into the dating pool instead. Enter Mei Kinosaki, a marriage swindler who becomes his unlikely romance consultant. Her big insight is that Gero’s appeal isn’t his combat skills but his selflessness, so she starts steering him toward high-stakes protection jobs as a roundabout way to find him a partner.
That premise lets the show flip between rom-com warmth and genuinely kinetic action. The roster of potential partners is the kind of cast that keeps things lively: a poised art thief, a bashful college student obsessed with magic, and a loud member of the Beast Clans who commands a squad of adorable rodents that squeak “Hammu!”
The animation muscle here matters. Marriage Toxin is produced by Bones Film, the studio behind My Hero Academia, and the series arrived fresh off MHA’s final season. Several of the studio’s top animators chipped in standout sequences, including an all-out battle that brought in the legendary Yutaka Nakamura.
Crucially for fans worried about a quality dip, the core creative team is sticking around for season 2:
- Motonobu Hori returns as director
- Kimiko Ueno handles series composition and the script
- Kohei Tokuoka stays on as character designer and chief animation director
- Taisei Iwasaki and Yuma Yamaguchi are back on music
There’s no shortage of source material to pull from. The Marriage Toxin manga has been running in Shonen Jump Plus since April 2022 and has been collected into 17 volumes so far. The anime adapted only up to partway through volume 6, and the manga is still ongoing, which leaves a deep well of story for the second season and potentially beyond.
For now, the broad strokes are all we have: more Gero, more chaotic matchmaking, and presumably more rodents going “Hammu!” sometime in 2027.
