Name: Marriage Toxin
Genre: Action & Adventure, Animation, Comedy
Released: 2026-04-07

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S1 · E4

Season 1, Episode 4

The Sound Master

2026-04-28

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S1 ONGOING

TV Series · Action & Adventure, Animation, Comedy · 2026

Watch Marriage Toxin | 2026

NOW PLAYING · S1 E3 - My First · 24m

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7.9

1 Seasons

13 Episodes

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

Rating

* 7.9 / 10

Episodes

13 Total

Premiered

April 7, 2026

Status

Ongoing

Language

Japanese

Country

Japan

Network

Views

Quality

4K · HDR10

Votes

Action & Adventure Animation Comedy

10 of 13 episodes · Season 1

E1 24m

Episode 12026-04-07

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.

7.9

E2 24m

Episode 22026-04-14

What Is "Charm," Anyway?

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

7.9

E3 24m

NOW PLAYING2026-04-21

My First

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

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

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

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

7.9

E7 24m

Episode 72026-05-19

The Bug Master's Wedding

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

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

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

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

7.9

Episode Synopsis

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

Show Details

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!

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