Matchmaking Battle: Hitman vs Fraudster: Marriage Toxin Episode 1 Preview
The wait is finally over for fans who have been following the Shonen Jump+ sensation! The advance cut of the first episode of the TV anime Marriage Toxin, which is based on the original work by Joumyaku and illustrated by Mizuki Yoda, has just been released. It gives us a very exciting glimpse into what is being called a comical battle action movie, following the bizarre partnership between a legendary hitman and a professional marriage swindler.

This preliminary cut of TV anime “Marriage Toxin” episode 1 sets the stage for a story that is quite unlike your typical shonen fare. While it has plenty of high-octane action, the core of the story is actually about a man just trying to find love in the most difficult circumstances imaginable. Many fans are already discussing marriage toxin: why this action-packed romance is the next big anime and manga hit because of its unique mix of genres.
The Poison User's Marriage Hunting: A Desperate Mission
The story focuses on Hikaru Gero, the next head of the Gero family. Now, this isn't just any normal family; they are a centuries-old lineage of assassins and poison users who have lived in the shadows of the underground business. Because Gero has spent his whole life training in the deadly arts, he has lived completely without having anything to do with women. To him, marriage was something totally irrelevant and far-off.
However, everything changes when his grandmother, the current head of the family, gives him a very shocking ultimatum. In order to ensure that the blood of the poison users doesn't die out, if Gero doesn't marry, his younger sister Akari will be forced to give birth to an heir. To protect his sister's freedom and her own love life, Gero decides he must find a wife immediately. This is how he ends up proposing to Mei Kinosaki, a marriage fraudster whom he actually met while she was his target for murder!
Why Fans Are Excited for the Premiere
The first episode, titled "The Poison User's Marriage Hunting," shows how Gero and Kinosaki form their unlikely alliance. Kinosaki, who is an expert at manipulation and romance, agrees to become Gero's advisor in his "match hunting" mission. Here are some reasons why this adaptation by Studio Bones is looking so promising:
- Unique Character Dynamics: The chemistry between the socially awkward Gero and the clever, cross-dressing Mei Kinosaki is both hilarious and genuinely heart-warming.
- High-Quality Animation: Being handled by the staff at Bones, we can expect the poison-based battle scenes to be visually stunning and very dynamic.
- A Blend of Genres: It manages to balance intense assassin battles with the awkwardness of modern dating in a way that feels very fresh.
- Stellar Voice Cast: With Haruki Ishiya voicing Gero and Shion Wakayama as Kinosaki, the characters really come to life with a lot of personality.
It is truly a chaotic ride, and that is exactly why people are saying marriage toxin: why this action-packed romance is the next big anime and manga hit is a must-watch for 2026. The director, Motonobu Hori, has even mentioned that the "secret ingredient" of this series is its inherent chaos and the fact that "nobody stepped on the brakes" during production.
If you are looking for a show that has great action, quirky characters, and a sincere heart under all that poison, then you definitely shouldn't miss this one. You can find more Marriage Toxin work information on the official website as we approach the April 7 premiere. It is going to be one of the toughest missions for love ever seen in anime!