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The Worst Episodes of Marriage Toxin

Every episode of Marriage Toxin ranked from worst to best. Explore the Worst Episodes of Marriage Toxin!

Binge this in 5h 12m•Peaking at 7.7/10

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

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Fuji TVTokai Television BroadcastingFukui TVHokkaido Cultural Broadcasting
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Episode Rankings

  1. #1 Worst Episode
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    Marriage Toxin Season 1 Episode 12 - Heart and Soul
    6.0/10(148 votes)

    #1 - Heart and Soul

    S1:E12

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

    Director:Yuka Hashimoto
    Writer:Kimiko Ueno

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  2. Marriage Toxin Season 1 Episode 11 - Offering
    6.2/10(131 votes)

    #2 - Offering

    S1:E11

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

    Director:Unknown
    Writer:Unknown

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  3. Marriage Toxin Season 1 Episode 6 - Together with Me
    6.5/10(262 votes)

    #3 - Together with Me

    S1:E6

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

    Director:Unknown
    Writer:Unknown

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  4. Marriage Toxin Season 1 Episode 4 - The Sound Master
    6.6/10(256 votes)

    #4 - The Sound Master

    S1:E4

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

    Director:Unknown
    Writer:Unknown

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  5. Marriage Toxin Season 1 Episode 5 - Lord Chladni
    6.6/10(232 votes)

    #5 - Lord Chladni

    S1:E5

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

    Director:Unknown
    Writer:Unknown

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  6. Marriage Toxin Season 1 Episode 2 - What Is "Charm," Anyway?
    7.0/10(327 votes)

    #6 - What Is "Charm," Anyway?

    S1:E2

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

    Director:Unknown
    Writer:Unknown

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    The 20 BEST Episodes of Marriage Toxin

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  7. Marriage Toxin Season 1 Episode 9 - The Animal Kingdom
    7.0/10(171 votes)

    #7 - The Animal Kingdom

    S1:E9

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

    Director:Unknown
    Writer:Unknown

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  8. Marriage Toxin Season 1 Episode 10 - Good-for-Nothing
    7.0/10(152 votes)

    #8 - Good-for-Nothing

    S1:E10

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

    Director:Unknown
    Writer:Unknown

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  9. Marriage Toxin Season 1 Episode 1 - The Poison Master's Search for a Bride
    7.2/10(396 votes)

    #9 - The Poison Master's Search for a Bride

    S1:E1

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

    Director:Motonobu Hori
    Writer:Kimiko Ueno

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  10. Marriage Toxin Season 1 Episode 3 - My First
    7.4/10(295 votes)

    #10 - My First

    S1:E3

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

    Director:Unknown
    Writer:Unknown

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  11. Marriage Toxin Season 1 Episode 8 - The Hitman Hunter
    7.5/10(190 votes)

    #11 - The Hitman Hunter

    S1:E8

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

    Director:Unknown
    Writer:Unknown

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  12. Marriage Toxin Season 1 Episode 13 - Thanks, Man
    7.5/10(62 votes)

    #12 - Thanks, Man

    S1:E13

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

    Director:Unknown
    Writer:Unknown

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  13. Marriage Toxin Season 1 Episode 7 - The Bug Master's Wedding
    7.7/10(215 votes)

    #13 - The Bug Master's Wedding

    S1:E7

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

    Director:Unknown
    Writer:Unknown

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Worst Episodes Summary

"Heart and Soul" is the worst rated episode of "Marriage Toxin". It scored 6/10 based on 148 votes. Directed by Yuka Hashimoto and written by Kimiko Ueno, it aired on 6/23/2026. This episode scored 0.2 points lower than the second lowest rated, "Offering".