MARRIAGETOXIN TV Anime Set for 2026! Haruki Ishiya to Voice Hikaru Gero, Shion Wakayama Cast as Mei Kinosaki, Teaser Visual & PV Unveiled

TV Anime MARRIAGETOXIN - Series Overview

Original Work: MARRIAGETOXIN by Joumyaku & Mizuki Yoda (Serialized in Shueisha’s Shonen Jump+)
Director: Motonobu Hori
Series Composition & Script: Kimiko Ueno
Character Design & Chief Animation Director: Kohei Tokuoka
Music: Taisei Iwasaki, yuma yamaguchi
Production Supervision: BONES
Animation Production: BONES Film
Production Committee: MARRIAGETOXIN Production Committee

【CAST】
Hikaru Gero: Haruki Ishiya
Mei Kinosaki: Shion Wakayama

Official Website：marriagetoxin-anime.com
Official SNS: X @marritoxi_PR

【Introduction】
The “Users”—a lineage that has honed assassination techniques for hundreds of years. Among them, the most powerful and influential are known as the Five Great Families of “Poison Users.” Hikaru Gero, a young man who inherits their bloodline. Having lived his life solely in the underworld and with no experience interacting with women, the concept of “marriage” has always felt distant from him. However, to prevent the extinction of the Poison User bloodline, the Gero family head threatens to forcibly make his sister bear an heir. At that time, Gero encounters Mei Kinosaki, an outstanding marriage swindler who becomes the target of his assignment. To resolve the succession issue and protect his sister, Gero decides that he must marry himself and, on the spot, enlists Kinosaki to help with his marriage hunt. “—That’s the first time someone’s made me that kind of proposal.” And so, with the skilled marriage swindler Kinosaki as his advisor, top-tier assassin Gero undertakes his life’s hardest mission—marriage hunting! Their goal: the ultimate marriage... The world’s toughest marriage-hunting battle action begins, as the strongest assassin and marriage swindler form the ultimate duo!

【Original Work Information】
Original Work: MARRIAGETOXIN by Joumyaku & Mizuki Yoda (Serialized in Shueisha’s Shonen Jump+)
Comics: Volumes 1–14 now on sale! The latest Volume 15 will be released Friday, October 3!

(C)静脈・依田瑞稀／集英社・マリッジトキシン製作委員会