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