The popular series currently serialized on Shonen Jump+, #MARRIAGETOXIN Anime Adaptation, Set for 2026 official site:https://www.marriagetoxin-anime.com/en/ official Instagram:@marriagetoxin_en For centuries, the deadly arts have been perfected by those known as the Masters. Among them, the Poison Masters of the Five Great Families hold the most fearsome power and influence. Hikaru Gero, heir to the Poison Masters’ Gero Family, has lived his entire life in the underworld, far removed from love or marriage. But when the Gero Family head decrees that Hikaru’s sister must bear an heir to preserve the bloodline—by force if necessary—Hikaru resolves to protect her at all costs. It is then that Hikaru encounters Mei Kinosaki, a brilliant marriage swindler who becomes the target of his latest job. Realizing that the only way of solving the family succession problem and protecting his sister is through marriage, Hikaru impulsively asks Mei for help in finding a bride. Staff Original Work MARRIAGETOXIN: Joumyaku・Mizuki Yoda (Serialized in “Manga Plus by SHUEISHA”） Director: Motonobu Hori Series Composition & Script: Kimiko Ueno Character Design & Chief Animation Director: Kohei Tokuoka Sub Character Design: Yurika Sako Costume Design: Kotono Prop Design: Ayumi Nagaki, Ryo Hirata Art Design: Toshiki Amata Art: Bihou Color Design: Hiroko Umezaki Photography Director: Go Kanbayashi 3DCG: SANZIGEN Inc. CG Animation Director: Taiki Nagashima Editing: Kumiko Sakamoto Sound Director: Haru Yamada Sound Effects: Tomokazu Mii Music: Taisei Iwasaki, yuma yamaguchi Production Supervision: Bones Animation Production: Bones Film Production: MARRIAGETOXIN Project Cast Hikaru Gero: Haruki Ishiya Mei Kinosaki: Shion Wakayama Kyoko Himekawa: Anna Nagase Shizuku Ushio: Mariya Ise Shiori Ureshino: Asaki Yuikawa Genya Naruko: Soma Saito Kimie Arashiyama: Hinano Shirahama Piichi Nakagawa: Simba Tsuchiya Akari Gero: Haruka Shiraishi Toshiki Hanamaki: Isamu Yusen ©Joumyaku・Mizuki Yoda/SHUEISHA, MARRIAGETOXIN Project