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Marriage Toxin

Latest episode

S1 E13 · Thanks, Man

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About Marriage Toxin

Marriage Toxin is a comedy and action & adventure anime series that premiered on Fuji TV on April 7, 2026. It has 2 seasons and 13 episodes so far and is still airing new episodes. The latest episode, Season 1 Episode 13 "Thanks, Man", aired on June 30, 2026.

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!

  • Comedy
  • Animation
  • Action & Adventure

Last updated

Episodes

13 episodes · 2 seasons

Marriage Toxin Season 3 hasn’t been dated yet. See what we know. Release date →

Season 1

2026 · 13 episodes · Last episode: 4 months ago

Marriage Toxin Season 1 release dates →
  1. Marriage Toxin S1 E13 still E13

    13. Thanks, Man

    Finale

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

  2. Marriage Toxin S1 E12 still E12

    12. Heart and Soul

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

  3. Marriage Toxin S1 E11 still E11

    11. Offering

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

  4. Marriage Toxin S1 E10 still E10

    10. Good-for-Nothing

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

  5. Marriage Toxin S1 E9 still E9

    9. The Animal Kingdom

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

  6. Marriage Toxin S1 E8 still E8

    8. 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.

  7. Marriage Toxin S1 E7 still E7

    7. The Bug Master's Wedding

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

  8. Marriage Toxin S1 E6 still E6

    6. Together with Me

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

  9. Marriage Toxin S1 E5 still E5

    5. Lord Chladni

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

  10. Marriage Toxin S1 E4 still E4

    4. The Sound Master

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

  11. Marriage Toxin S1 E3 still E3

    3. My First

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

  12. Marriage Toxin S1 E2 still E2

    2. What Is "Charm," Anyway?

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

  13. Marriage Toxin S1 E1 still E1

    1. 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.

Season 2

Marriage Toxin Season 2 release dates →

Episodes for this season haven't been announced yet.

Marriage Toxin FAQ

When is the next episode of Marriage Toxin?

A date for the next episode of Marriage Toxin hasn't been announced yet. Follow Marriage Toxin in the Streambay app and you'll be notified as soon as a new episode airs.

When did the latest episode of Marriage Toxin come out?

The most recent episode of Marriage Toxin, Season 1 Episode 13 "Thanks, Man", aired on June 30, 2026.

How many seasons of Marriage Toxin are there?

Marriage Toxin has 2 seasons with 13 episodes in total.

When did Marriage Toxin first air?

Marriage Toxin first aired on Fuji TV on April 7, 2026.

How do I get notified when new episodes of Marriage Toxin are released?

Download the Streambay app, follow Marriage Toxin, and you'll get a push notification the moment each new episode is released.

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