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The Best Episodes of Marriage Toxin

Every episode of Marriage Toxin ranked from best to worst. Let's dive into the Best Episodes of Marriage Toxin!

Binge this in 5h 12m•Peaking at 8.4/10

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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Seasons2

All12

Episode Rankings

  1. #1 Fan Favorite
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    Marriage Toxin Season 1 Episode 12 - Heart and Soul
    8.4/10(264 votes)

    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 1 - The Poison Master's Search for a Bride
    8.1/10(482 votes)

    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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  3. Marriage Toxin Season 1 Episode 6 - Together with Me
    8.1/10(341 votes)

    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 2 - What Is "Charm," Anyway?
    8.0/10(402 votes)

    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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  5. Marriage Toxin Season 1 Episode 3 - My First
    8.0/10(372 votes)

    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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  6. Marriage Toxin Season 1 Episode 13 - Thanks, Man
    8.0/10(197 votes)

    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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    7. Trending NowTRENDING NOW

    The 20 WORST Episodes of Marriage Toxin

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  7. Marriage Toxin Season 1 Episode 7 - The Bug Master's Wedding
    7.9/10(290 votes)

    S1:E7

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

    Director:Naomi Mikamiyama
    Writer:Kimiko Ueno

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  8. Marriage Toxin Season 1 Episode 8 - The Hitman Hunter
    7.9/10(271 votes)

    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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  9. Marriage Toxin Season 1 Episode 11 - Offering
    7.9/10(223 votes)

    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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  10. Marriage Toxin Season 1 Episode 10 - Good-for-Nothing
    7.8/10(233 votes)

    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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  11. Marriage Toxin Season 1 Episode 9 - The Animal Kingdom
    7.7/10(251 votes)

    S1:E9

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

    Director:Unknown
    Writer:Unknown

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  12. Marriage Toxin Season 1 Episode 4 - The Sound Master
    7.4/10(331 votes)

    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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  13. Marriage Toxin Season 1 Episode 5 - Lord Chladni
    7.4/10(308 votes)

    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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Best Episodes Summary

"Heart and Soul" is the best rated episode of "Marriage Toxin". It scored 8.4/10 based on 264 votes. Directed by Yuka Hashimoto and written by Kimiko Ueno, it aired on 6/23/2026. This episode scored 0.3 points higher than the second highest rated, "The Poison Master's Search for a Bride".