Overview
Marriage Toxin turns a deadly profession into an unlikely love story. Hikaru Gero is a highly skilled assassin from one of five powerful poison-master families, yet the one mission he cannot complete on his own is finding a wife. Family pressure, especially the need to protect his sister, pushes him toward marriage, and that is where Mei Kinosaki comes in: a sharp, confident marriage swindler who knows how people think, flirt, and fall in love.
The comedy comes from that mismatch. Gero can face killers without flinching, but ordinary dates, compliments, and misunderstandings leave him completely out of his depth. Mei treats romance like a strategy game, while Gero slowly learns that charm is not a trick to memorize but something that grows from honesty. Around them, rival families, dangerous suitors, and old underworld rules keep raising the stakes, so every romantic step forward can turn into an action set piece.
Quick facts
- Year: 2026
- Type: Series
- Seasons: 1 (13 episodes)
- Genres: Animation, Action & Adventure, Comedy
- Original language: Japanese
- Network: Fuji TV
- Status: Returning Series
Watch the Trailer
Watch the official trailer from Bandai Namco Filmworks Channel on YouTube below.
Where to Watch
Stream Season 1 of Marriage Toxin on Crunchyroll in India (JustWatch India also lists it through the Crunchyroll Amazon Channel):
Frequently asked questions
What is Marriage Toxin about? It follows poison-master assassin Hikaru Gero, who hires marriage swindler Mei Kinosaki to help him find a bride, blending underworld action with a romantic comedy about learning how to connect with people.
How many episodes does Marriage Toxin have? Season 1 has 13 episodes, first premiering on April 7, 2026.
Who voices the two leads? Haruki Ishiya voices Hikaru Gero, and Shion Wakayama voices Mei Kinosaki.
Where can I watch Marriage Toxin in India? JustWatch India lists Season 1 on Crunchyroll in India, including through the Crunchyroll Amazon Channel.
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