The official website for the upcoming TV anime adaptation of the MARRIAGETOXIN action manga created by Joumyaku (story) and Mizuki Yoda (arts) announced today that the anime is set to premiere in Japan on April 7, 2026 . In Japan, the anime will air every Tuesday at 11:00 PM on the newly established late-night anime programming block "Ka-Anival!!" on the Kansai TV and Fuji Television network. In the ongoing winter 2026 season, the block is airing Tune In to the Midnight Heart . RELATED: MARRIAGETOXIN TV Anime Unveils April 2026 Premiere, New Trailer, Visual and More MARRIAGETOXIN Anime Trailer 1 Motonobu Hori ( Metallic Rouge ) directs the MARRIAGETOXIN anime at studio bones film, with series composition by Kimiko Ueno ( ZENSHU ), character designs and chief animation direction by Kohei Tokuoka ( The Fragrant Flower Blooms With Dignity ) and music by Taisei Iwasaki ( BELLE ) and yuma yamaguchi ( Link Click ). The main voice cast members include: Hikaru Gero voiced by Haruki Ishiya (Daiya in 86 EIGHTY-SIX ) Mei Kinosaki voiced by Shion Wakayama (Momo in DAN DA DAN ) Kyoko Himekawa voiced by Anna Nagase (Riko Amanai in JUJUTSU KAISEN ) Shiori Ureshino voiced by Asaki Yuikawa (Niina Shimazaki in Blue Box ) Kimie Arashiyama voiced by Hinano Shirahama (Sara Haizaki in HOTEL INHUMANS ) Shizuku Ushio voiced by Mariya Ise (Killua Zoldyck in Hunter x Hunter ) Genya Naruko voiced by Soma Saito (William James Moriarty in Moriarty the Patriot ) Pilchi Nakagawa voiced by Simba Tsuchiya (Tsutomu Goshiki in Haikyu!! ) The original manga by Joumyaku and Mizuki Yoda's began in April 2022 on Shonen Jump+. 16 volumes are currently available in Japan. VIZ Media releases an English-language version of the manga, and describes the series as such: As a deadly assassin from the poison clan, Gero swears he’ll never settle down—that is, until the family orders his sister to produce the poison clan’s next heir. Refusing to let his sister abandon her chance at true love with her girlfriend, Gero desperately turns to marriage swindler Mei Kinosaki for relationship advice. Can Kinosaki turn this trained killer into a charming husband-to-be? Source: MARRIAGETOXIN official anime website
