Watch Marriage Toxin Online
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What is Marriage Toxin about?
For centuries, the deadly arts have been perfected by Masters, and Five Great Families hold the greatest power and influence. Hikaru Gero, an heir to the Gero family, lives in the underworld as an elite assassin. When his sister is pressured to produce an heir, Hikaru asks Mei Kinosaki, a brilliant marriage swindler, to find him a bride. The most challenging mission of his life begins!
Latest episode
S1 · Episode 13 — Thanks, Man · 2026-06-30
Arashiyama throws a party to thank Gero, and Kinosaki sets out to make sure it takes a romantic turn.
- Genres
- Animation, Action & Adventure, Comedy
- First aired
- 2026-04-07
- Rating
- ★ 7.9 / 10
Top cast
- Haruki Ishiya Hikaru Gero (voice)
- Shion Wakayama Mei Kinosaki (voice)
- Anna Nagase Kyoko Himekawa (voice)
- Mariya Ise Shizuku Ushio (voice)
- Asaki Yuikawa Shiori Ureshino (voice)
- Soma Saito Genya Naruko (voice)
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