Series · 2026 · 1 Season
Marriage Toxin
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!
- Rating
- 7.9 / 10
- Creator
- Yoshihiro Oyabu
- Status
- Returning Series
Episodes
Episode 1 · 24 min
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.
Episode 2 · 24 min
What Is "Charm," Anyway?
Kinosaki takes Gero to practice dating in a floating art museum that becomes the scene of a heist.
Episode 3 · 24 min
My First
Gero fights a Water Master to rescue Himekawa, but his real challenge is taking her on a date afterward.
Episode 4 · 24 min
The Sound Master
Gero goes undercover as a student to guard a corporate heiress, but he isn't the only Master on campus.
Episode 5 · 24 min
Lord Chladni
A test of courage seems like a romantic opportunity, but it turns out to be a deadly trap.
Episode 6 · 24 min
Together with Me
Panicked students try to sacrifice Ureshino, and stopping Naruko is the only way to make them see reason.
Episode 7 · 24 min
The Bug Master's Wedding
Gero goes to see his friend get married, only to run into some particularly unwelcome wedding crashers.
Episode 8 · 24 min
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.
Episode 9 · 24 min
The Animal Kingdom
To save Arashiyama, Gero and friends storm into the Beast Clan's home ground.
Episode 10 · 24 min
Good-for-Nothing
Gero and Arashiyama start to bond, but a run-in with their biggest enemy ruins the mood.
Episode 11 · 24 min
Offering
Kinosaki and Piichi sneak into a Beast Clan lab and witness bizarre experiments with blood.
Episode 12 · 24 min
Heart and Soul
To stand a chance against the Beast Master, Gero must get in touch with the essence of his Poison Blood.
Episode 13 · 24 min
Thanks, Man
Arashiyama throws a party to thank Gero, and Kinosaki sets out to make sure it takes a romantic turn.
