Today, the MARRIAGETOXIN project announced a second action-packed PV trailer, along with the anime’s ending song. “Shake Na Baby” by AKASAKI is a high-energy pop song that matches the drama between the unlikely duo of protagonist Gero and deuteragonist Kinosaki.
MARRIAGETOXIN is written by Joumyaku and illustrated by Mizuki Yoda. The series is currently serialized on Shueisha’s manga app Shonen Jump+ and will begin airing as a TV anime in Japan on April 7, 2026. Information surrounding the U.S. premiere information coming soon.
Watch the second PV and listen to the ending theme song here:
AKASAKI discusses “Shake Na Baby”:
Ahead of the anime’s April 7th Japan premiere, “The Making of MARRIAGETOXIN” will offer audiences a nontoxic taste of the highly anticipated series, featuring exclusive interviews with the main production staff. Peel back the veil of romance and poison at the process of character design, dynamic action design, and so much more. The six-part, exclusive interview series will be released on the official MARRIAGETOXIN Instagram account (instagram.com/marriagetoxin_en/).
Keep an eye out for the upcoming, in-depth volumes of “The Making of MARRIAGETOXIN:”
- 0: The Making of MARRIAGETOXIN https://youtu.be/lDTRF86VTGE?si=JsEwfd_IATMAEhtE
- 1: Character Design https://www.youtube.com/watch?v=uiQqXhpymc4
- 2: Color Design
- 3: Photography
- 4: Action Scene Animation
- 5: Sound Design
Series Introduction
For centuries, the deadly arts have been perfected by those known as the Masters. Among them, the Poison Masters of the Five Great Families hold the most fearsome power and influence. Hikaru Gero, heir to the Poison Masters’ Gero Family, has lived his entire life in the underworld, far removed from love or marriage.
But when the Gero Family head decrees that Hikaru’s sister must bear an heir to preserve the bloodline – by force if necessary – Hikaru resolves to protect her at all costs. It is then that Hikaru encounters Mei Kinosaki, a brilliant marriage swindler who becomes the target of his latest job. Realizing that the only way of solving the family succession problem and protecting his sister is through marriage, Hikaru impulsively asks Mei for help in finding a bride.
“That’s the first time anyone’s ever proposed like that.”
And so, with the cunning marriage swindler Mei as his advisor, elite assassin Hikaru embarks on the most challenging mission of his life: finding a wife!
Their goal: the ultimate marriage.
This is the world’s toughest mission for love, brought to you by the ultimate duo – an assassin and a marriage swindler!
To win love, you’ve got to play with poison.
A high-stakes mission for the ultimate duo begins!
Source: Press Release


