Marriage Toxin Season 1 poster

Marriage Toxin

Season 1

13 episodes · premiered Apr 7, 2026

Where to watch Marriage Toxin

  1. E1 The Poison Master's Search for a Bride

    Apr 7, 2026 · 24m

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

  2. E2 What Is "Charm," Anyway?

    Apr 14, 2026 · 24m

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

  3. E3 My First

    Apr 21, 2026 · 24m

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

  4. E4 The Sound Master

    Apr 28, 2026 · 24m

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

  5. E5 Lord Chladni

    May 5, 2026 · 24m

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

  6. E6 Together with Me

    May 12, 2026 · 24m

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

  7. E7 The Bug Master's Wedding

    May 19, 2026 · 24m

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

  8. E8 The Hitman Hunter

    May 26, 2026 · 24m

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

  9. E9 The Animal Kingdom

    Jun 2, 2026 · 24m

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

  10. E10 Good-for-Nothing

    Jun 9, 2026 · 24m

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

  11. E11 Offering

    Jun 16, 2026 · 24m

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

  12. E12 Heart and Soul

    Jun 23, 2026 · 24m

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

  13. E13 Thanks, Man

    Jun 30, 2026 · 24m

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