Marriage Toxin (2026)

SERIES

20262 Seasons24m episodes7.4

Animation, Action & Adventure, Comedy

TMDB7.4

Votes52

Your rating

Runtime: 24m episodes
Genre: Animation
Certificate: TV-14
Origin: JP

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!

Where to watch

Region

Stream

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Availability from JustWatch via TMDB.

Details

Status: Returning Series
First aired: Apr 7, 2026
Network: 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, KTN
Studio: BONES Film, Bandai Namco Filmworks

Time to finish

5 hrs

13 episodes. About 1 week at an hour a night.

View on IMDb ↗

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)

Hinano Shirahama

Kimie Arashiyama (voice)

Shimba Tsuchiya

Piichi Nakagawa (voice)

Haruka Shiraishi

Akari Gero (voice)

Isamu Yusen

Toshiki Hanamaki (voice)

SERIES

20262 Seasons24m episodes7.4

Animation, Action & Adventure, Comedy

TMDB7.4

Votes52

Your rating

Runtime: 24m episodes
Genre: Animation
Certificate: TV-14
Origin: JP

About

Where to watch

Region

Stream

Crunchyroll

Crunchyroll Amazon Channel

Buy

Amazon Video

Apple TV Store

Fandango At Home

Availability from JustWatch via TMDB.

Episodes

0 of 0 watched

E1 · Airs Apr 7, 2026 · 24m · ★ 7.0
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.
E2 · Airs Apr 14, 2026 · 24m · ★ 7.0
What Is "Charm," Anyway?
Kinosaki takes Gero to practice dating in a floating art museum that becomes the scene of a heist.
E3 · Airs Apr 21, 2026 · 24m · ★ 7.4
My First
Gero fights a Water Master to rescue Himekawa, but his real challenge is taking her on a date afterward.
E4 · Airs Apr 28, 2026 · 24m · ★ 6.5
The Sound Master
Gero goes undercover as a student to guard a corporate heiress, but he isn't the only Master on campus.
E5 · Airs May 5, 2026 · 24m · ★ 6.2
Lord Chladni
A test of courage seems like a romantic opportunity, but it turns out to be a deadly trap.
E6 · Airs May 12, 2026 · 24m · ★ 6.5
Together with Me
Panicked students try to sacrifice Ureshino, and stopping Naruko is the only way to make them see reason.
E7 · Airs May 19, 2026 · 24m · ★ 7.7
The Bug Master's Wedding
Gero goes to see his friend get married, only to run into some particularly unwelcome wedding crashers.
E8 · Airs May 26, 2026 · 24m · ★ 7.5
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.
E9 · Airs Jun 2, 2026 · 24m · ★ 7.0
The Animal Kingdom
To save Arashiyama, Gero and friends storm into the Beast Clan's home ground.
E10 · Airs Jun 9, 2026 · 24m · ★ 7.0
Good-for-Nothing
Gero and Arashiyama start to bond, but a run-in with their biggest enemy ruins the mood.
E11 · Airs Jun 16, 2026 · 24m · ★ 6.2
Offering
Kinosaki and Piichi sneak into a Beast Clan lab and witness bizarre experiments with blood.
E12 · Airs Jun 23, 2026 · 24m · ★ 6.0
Heart and Soul
To stand a chance against the Beast Master, Gero must get in touch with the essence of his Poison Blood.
E13 · Airs Jun 30, 2026 · 24m · ★ 7.5
Thanks, Man
Arashiyama throws a party to thank Gero, and Kinosaki sets out to make sure it takes a romantic turn.

Details

Status: Returning Series
First aired: Apr 7, 2026
Network: 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, KTN
Studio: BONES Film, Bandai Namco Filmworks

Time to finish

5 hrs

13 episodes. About 1 week at an hour a night.

View on IMDb ↗

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)

Hinano Shirahama

Kimie Arashiyama (voice)

Shimba Tsuchiya

Piichi Nakagawa (voice)

Haruka Shiraishi

Akari Gero (voice)

Isamu Yusen

Toshiki Hanamaki (voice)

About

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Time to finish

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