The upcoming MARRIAGETOXIN TV anime adaptation will make its debut in April 2026.
As previously known, it will be broadcast in Kansai Television’s new Kaanival 11 slot, which launches in January with Tune In to the Midnight Heart. The Ghost in the Shell and Super Psychic Policeman Chojo are other upcoming shows that will be featured in the slot.
MARRIAGETOXIN is based on the manga by Joumyakyu (story) and Mizuki Yoda (art). One protagonist, Hikaru, is an assassin and the heir to the Poison Masters Clan, and though he’s not looking for marriage and love, he commits to finding a bride to prevent his sister from being forced to produce the next heir. One of his targets is Mei, a marriage swindler who, in a twist of events, ends up working with Hikaru to help him get a bride.
The manga began in Shueisha’s Shonen Jump + in 2022 and has 15 volumes as of October 2025. It placed 8th in the Tsugi ni Kuru Manga Taisho 2022’s web category. Manga Plus has it in English.
Staff
• Director: Motonobu Hori (Metallic Rouge, Super Crooks, Carole & Tuesday)
• Series composer and scriptwriter: Kimiko Ueno (Ranma ½ remake series composer and co-scriptwriter, the upcoming Sanda)
• Character designer and chief animation director: Kohei Tokuoka (The Fragrant Flower Blooms with Dignity)
• Music composer: yuma yamaguchi (Undead Murder Farce, the upcoming Goodbye, Lara)
• Animation production studio: BONES Film
• Production and supervision: BONES
Cast
• Haruki Ishiya as Hikaru Gero
• Shion Wakayama as Mei Kinosaki
Source: MARRIAGETOXIN anime website
