Marriagetoxin
Marriage Toxin
マリッジトキシン
Genres
- Action
Tags
all 17- OrganisationsAssassins98
- OtherMarriage97
- SceneUrban96
- OtherCrime92
- ComedySurreal Comedy90
- Main CastPrimarily Adult Cast86
- Main CastMale Protagonist83
- TraitsBisexual81
- FantasySuper Power80
- DemographicShounen70
- UniverseUrban Fantasy68
- OtherLGBTQ+ Themes68
- RomanceHeterosexual67
- ActionGuns64
- Main CastAnti-Hero57
- OtherAnimals40
- RomanceYuri40
Genres: Action. Tags: Assassins, Marriage, Urban, Crime, Surreal Comedy, Primarily Adult Cast, Male Protagonist, Bisexual, Super Power, Shounen, Urban Fantasy, LGBTQ+ Themes.
#1815
Ranked
#1872
Popularity
400
Favorites
59.7K
Members
#8
This Season
Popular TV
#17
This Season
Rated TV
Episode Progress
Available up to Episode 13
Available up to Episode 13 on Bilibili TV, Crunchyroll, iQ, YouTube
- Premiered
- Spring 2026
- Aired
- Apr 1, 2026 –
- Studio
- Bones Film
Alternative Titles
jaマリッジトキシン
enMarriage Toxin
thวิวาห์แต้มพิษ
Synopsis
For centuries, the Poison Masters have perfected the art of assassination. Among them, the Gero family stands as one of the five most powerful families of Masters, wielding unmatched skill and influence. Hikaru Gero, heir to this infamous bloodline, has lived his life deep in the shadows of the underworld, far removed from love or marriage. However, to ensure the Poison Master bloodline does not die out, the head of the Gero family declares that Hikaru's sister will be forced to bear an heir. Soon after, Hikaru crosses paths with Mei Kinosaki, a brilliant marriage swindler who also happens to be his current assassination target. Determined to protect his sister and solve the succession problem himself, Hikaru makes an unexpected request on the spot—asking Mei to help him get married. "...That's the first time anyone's ever proposed like that." And so, with the cunning marriage swindler Mei as his advisor, the elite assassin Hikaru sets out on the toughest mission for love. His goal? The ultimate marriage. The most unlikely duo—an assassin and a marriage swindler—take on the world's toughest mission for love! (Source: Official site)
Synopsis
Marriagetoxin aired on Kansai TV and Fuji TV's Ka-Anival!! block.
Where to Watch
Trailer

Platform Scores
MAL
7.59
AniList
75 / 100
Kitsu
76 / 100
AniList Trend
6,394
Episode Guide
Aired so far: 13 / 22
Main Story
13 / 22
59%
Latest Aired
Episode 13
Remaining
9 eps
13 / 22
Theme Songs
Public users tracking this
2
Status Breakdown
Tags
Shows how closely each tag relates to this animeShow spoiler tags5
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Frequently Asked Questions
Is Marriagetoxin currently airing?
Yes, Marriagetoxin is currently airing as part of the spring 2026 anime season. You can follow the ongoing story of Hikaru Gero as new episodes are released.
Where can I watch Marriagetoxin?
You can stream Marriagetoxin on Crunchyroll. It is currently available there as part of their seasonal lineup.
What is the plot of Marriagetoxin?
Marriagetoxin follows Hikaru Gero, an heir to a legendary family of assassins known as Poison Masters, who has lived his life detached from romance. To prevent his sister from being forced to bear an heir for the family, he teams up with a brilliant marriage swindler named Mei Kinosaki to navigate the complex world of finding a partner.
Who is the production team behind Marriagetoxin?
Marriagetoxin is produced by the studio Bones Film and directed by Hori, Motonobu. The staff also includes notable contributors such as Ueno, Kimiko, Iwasaki, Taisei, Joumyaku, and Sako, Yurika.
Are there other anime like Marriagetoxin I should watch?
If you enjoy the action and themes in Marriagetoxin, fans often recommend checking out Sakamoto Days, Spy x Family, Kill Blue, Great Pretender, and Lycoris Recoil.
Who are the main characters in Marriagetoxin?
The story centers on the uneasy partnership between Gero, Hikaru, an assassin from a powerful bloodline, and Kinosaki, Mei, a skilled marriage swindler.
What are the opening and ending theme songs for Marriagetoxin?
The opening theme for the series is titled "Kill or Kiss" by Yurina Hirate (平手友梨奈). The ending theme is "Shake Na Baby (シャケナベイベー)" performed by AKASAKI.
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Bones is bringing a new action-packed shonen series about marriage and crime to screens.
Bones Tackles Marriage Thriller 'Marriagetoxin' for Spring 2026
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Bones Adapts 'Marriagetoxin' Manga for Spring 2026
Information
- Type
- TV
- Status
- Airing
- Country
- Japan
- Premiered
- Spring 2026
- Aired
- Apr 1, 2026 –
- Episodes
- 13
- Studio
- Bones Film
Alternative Titles
jaマリッジトキシン
enMarriage Toxin
thวิวาห์แต้มพิษ
Discussion
Discussion