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Marriage Toxin

Marriage Toxin
★ 7.4/10•2026•24m•TV-14•Animation•Action & Adventure•Comedy
Similars

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!

StatusReturning Series
Runtime24m
LanguageJA
First Air DateApr 7, 2026

Episodes

Episode 1 - The Poison Master's Search for a BrideE124m

The Poison Master's Search for a Bride

An assassin must marry to appease his clan and save his sister. Small problem: He doesn't know how to date.

Apr 7, 2026

Episode 2 - What Is "Charm," Anyway?E224m

What Is "Charm," Anyway?

Kinosaki takes Gero to practice dating in a floating art museum that becomes the scene of a heist.

Apr 14, 2026

Episode 3 - My FirstE324m

My First

Gero fights a Water Master to rescue Himekawa, but his real challenge is taking her on a date afterward.

Apr 21, 2026

Episode 4 - The Sound MasterE424m

The Sound Master

Gero goes undercover as a student to guard a corporate heiress, but he isn't the only Master on campus.

Apr 28, 2026

Episode 5 - Lord ChladniE524m

Lord Chladni

A test of courage seems like a romantic opportunity, but it turns out to be a deadly trap.

May 5, 2026

Episode 6 - Together with MeE624m

Together with Me

Panicked students try to sacrifice Ureshino, and stopping Naruko is the only way to make them see reason.

May 12, 2026

Episode 7 - The Bug Master's WeddingE724m

The Bug Master's Wedding

Gero goes to see his friend get married, only to run into some particularly unwelcome wedding crashers.

May 19, 2026

Episode 8 - The Hitman HunterE824m

The Hitman Hunter

Gero takes a job to protect a fellow Master from a man who can go toe-to-toe with the expert assassins.

May 26, 2026

Episode 9 - The Animal KingdomE924m

The Animal Kingdom

To save Arashiyama, Gero and friends storm into the Beast Clan's home ground.

Jun 2, 2026

Episode 10 - Good-for-NothingE1024m

Good-for-Nothing

Gero and Arashiyama start to bond, but a run-in with their biggest enemy ruins the mood.

Jun 9, 2026

Episode 11 - OfferingE1124m

Offering

Kinosaki and Piichi sneak into a Beast Clan lab and witness bizarre experiments with blood.

Jun 16, 2026

Episode 12 - Heart and SoulE1224m

Heart and Soul

To stand a chance against the Beast Master, Gero must get in touch with the essence of his Poison Blood.

Jun 23, 2026

Episode 13 - Thanks, ManE1324m

Thanks, Man

Arashiyama throws a party to thank Gero, and Kinosaki sets out to make sure it takes a romantic turn.

Jun 30, 2026

Actors

Haruki Ishiya

Haruki Ishiya

Hikaru Gero (voice)

Shion Wakayama

Shion Wakayama

Mei Kinosaki (voice)

Anna Nagase

Anna Nagase

Kyoko Himekawa (voice)

Mariya Ise

Mariya Ise

Shizuku Ushio (voice)

Asaki Yuikawa

Asaki Yuikawa

Shiori Ureshino (voice)

Soma Saito

Soma Saito

Genya Naruko (voice)

Hinano Shirahama

Hinano Shirahama

Kimie Arashiyama (voice)

Shimba Tsuchiya

Shimba Tsuchiya

Piichi Nakagawa (voice)

Haruka Shiraishi

Haruka Shiraishi

Akari Gero (voice)

Isamu Yusen

Isamu Yusen

Toshiki Hanamaki (voice)

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