Marriage Toxin

Season 1

2026 · 13 episodes · 5h 12m in all · 6.9/10

Episodes

1. 

   1. The Poison Master's Search for a Bride

   7 Apr 2026 · 24 min · 7.0/10

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

2. 

   2. What Is "Charm," Anyway?

   14 Apr 2026 · 24 min · 7.0/10

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

3. 

   3. My First

   21 Apr 2026 · 24 min · 7.4/10

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

4. 

   4. The Sound Master

   28 Apr 2026 · 24 min · 6.5/10

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

5. 

   5. Lord Chladni

   5 May 2026 · 24 min · 6.2/10

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

6. 

   6. Together with Me

   12 May 2026 · 24 min · 6.5/10

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

7. 

   7. The Bug Master's Wedding

   19 May 2026 · 24 min · 7.7/10

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

8. 

   8. The Hitman Hunter

   26 May 2026 · 24 min · 7.5/10

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

9. 

   9. The Animal Kingdom

   2 Jun 2026 · 24 min · 7.0/10

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

10. 

    10. Good-for-Nothing

    9 Jun 2026 · 24 min · 7.0/10

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

11. 

    11. Offering

    16 Jun 2026 · 24 min · 6.2/10

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

12. 

    12. Heart and Soul

    23 Jun 2026 · 24 min · 6.0/10

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

13. 

    13. Thanks, Man

    30 Jun 2026 · 24 min · 7.5/10

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