S01E0124:091. The Poison Master's Search for a BrideAn assassin must marry to appease his clan and save his sister. Small problem: He doesn't know how to date.Episodes — Season 1
Season pageS01E0124:091. The Poison Master's Search for a BrideAn assassin must marry to appease his clan and save his sister. Small problem: He doesn't know how to date.
S01E0224:192. What Is "Charm," Anyway?Kinosaki takes Gero to practice dating in a floating art museum that becomes the scene of a heist.
S01E0324:333. My FirstGero fights a Water Master to rescue Himekawa, but his real challenge is taking her on a date afterward.
S01E0424:504. The Sound MasterGero goes undercover as a student to guard a corporate heiress, but he isn't the only Master on campus.
S01E0524:285. Lord ChladniA test of courage seems like a romantic opportunity, but it turns out to be a deadly trap.
S01E0624:026. Together with MePanicked students try to sacrifice Ureshino, and stopping Naruko is the only way to make them see reason.
S01E0724:047. The Bug Master's WeddingGero goes to see his friend get married, only to run into some particularly unwelcome wedding crashers.
S01E0824:498. The Hitman HunterGero takes a job to protect a fellow Master from a man who can go toe-to-toe with the expert assassins.
S01E0924:039. The Animal KingdomTo save Arashiyama, Gero and friends storm into the Beast Clan's home ground.
S01E1024:1710. Good-for-NothingGero and Arashiyama start to bond, but a run-in with their biggest enemy ruins the mood.
S01E1124:4311. OfferingKinosaki and Piichi sneak into a Beast Clan lab and witness bizarre experiments with blood.
S01E1224:1312. Heart and SoulTo stand a chance against the Beast Master, Gero must get in touch with the essence of his Poison Blood.
S01E1324:3913. Thanks, ManArashiyama throws a party to thank Gero, and Kinosaki sets out to make sure it takes a romantic turn.Where to stream Marriage Toxin
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Availability provided by JustWatch via TMDB, details on TMDB. Offers in the United States, subject to change.
Marriage Toxin synopsis
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!
Marriage Toxin cast
Haruki IshiyaHikaru Gero (voice) · 13 ep.
Shion WakayamaMei Kinosaki (voice) · 13 ep.
Anna NagaseKyoko Himekawa (voice) · 13 ep.
Mariya IseShizuku Ushio (voice) · 13 ep.
Asaki YuikawaShiori Ureshino (voice) · 13 ep.
Soma SaitoGenya Naruko (voice) · 13 ep.
Hinano ShirahamaKimie Arashiyama (voice) · 13 ep.
Shimba TsuchiyaPiichi Nakagawa (voice) · 13 ep.
Haruka ShiraishiAkari Gero (voice) · 13 ep.
Isamu YusenToshiki Hanamaki (voice) · 13 ep.Marriage Toxin trailer
About the series Marriage Toxin
Marriage Toxin is a series (animation and action & adventure), airing on Fuji TV, Tokai Television Broadcasting, Kansai TV, Fukui TV, Hokkaido Cultural Broadcasting, Iwate Menkoi Television, Sendai Television, SAGA TV, Ishikawa TV, TNC, OHK, Kochi Sun Sun Broadcasting, Television Shin Hiroshima System, TV Shizuoka, NST, NBS, Sakuranbo TV, TSK, Ehime Broadcasting, KTS, Fukushima TV, AKT, Toyama Television, TV Kumamoto, Okinawa Television Broadcasting and KTN since 2026. It has 2 seasons and 13 episodes of about 24 minutes each. The series is still airing. Cast members include Haruki Ishiya, Shion Wakayama and Anna Nagase. It is rated 7.4/10 by 52 TMDB users.
Frequently asked questions about Marriage Toxin
Where to watch Marriage Toxin online?
In the United States, Marriage Toxin is available with a subscription on Crunchyroll and Crunchyroll Amazon Channel, to buy on Amazon Video, Apple TV Store and Fandango At Home (source: JustWatch via TMDB, offers subject to change). Each episode has its own page with this information.
How many seasons of Marriage Toxin are there?
Marriage Toxin has 2 seasons for a total of 13 episodes.
Has Marriage Toxin ended?
No, current status: returning series.
Who stars in Marriage Toxin?
The lead actors are 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)).
