Hikaru Gero
main character
TV
7.6
My TrackerPLANNING
Episode: 0 / 13
My Score:
Anime DetailsFINISHED
- Format
- TV series
- Episodes
- 13
- Episode length
- 24 min
- Total watch time
- 5 h 12 min
- Status
- Finished
- Aired
- April 7, 2026 – June 30, 2026
- Season
- Spring 2026
- Source
- Manga
- Studio
- bones film
- Director
- Motonobu Hori
- Original creator
- Joumyaku
- Music
- Taisei Iwasaki, Yuma Yamaguchi
- Country
- Japan
- AniList score
- 76/100
Estimated watch time
5h 12m
⚡ 3 days at 5 eps/day
Tags & Tropes
Assassins97%Marriage94%Crime89%Super Power86%Primarily Adult Cast85%Urban84%Surreal Comedy84%Bisexual78%Urban Fantasy75%Male Protagonist74%
overview details
Synopsis
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. (Source: EMOTION Label Channel)
Should you watch MARRIAGETOXIN?
MARRIAGETOXIN has been well received, with an average AniList score of 76/100 — 62% of 20,264 ratings are 8/10 or higher.
It ranks #53 highest-rated anime of 2026, and #17 most popular anime of 2026, and #16 highest-rated anime of Spring 2026 on AniList.
Of the 62.2K AniList users who started it, 5.8% dropped it, so it is dropped at a typical rate; 32.1K have finished it.
At about 5 h 12 min in total, it is a short commitment — a weekend binge.
Best for viewers who enjoy Action, Comedy, Drama — especially assassins, marriage, crime, super power.
Where to Watch Officially
Availability, audio and subtitles vary by region and service.
Episodes
13 episodes are listed.
Trailer
Watch on YouTubeMain cast & voice actors
Creators & key staff
- Original creator
- Joumyaku
- Director
- Motonobu Hori
- Series composition
- Kimiko Ueno
- Character design
- Kouhei Tokuoka
- Music
- Taisei Iwasaki
- Music
- Yuma Yamaguchi
Where it fits in the series
- Start here. MARRIAGETOXIN is the first entry in its story.
- Watch next: MARRIAGETOXIN 2nd Season (2027)
Related entries
Opening & ending themes
Openings (1)
- OP1“Kill or Kiss” by Yurina Hirate · eps 2-13
Endings (1)
- ED1“Shake Na Baby” by AKASAKI · eps 2, 4-5, 7-12
Theme data from AnimeThemes.moe.
If you like MARRIAGETOXIN
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MARRIAGETOXIN FAQ
How many episodes does MARRIAGETOXIN have?
MARRIAGETOXIN has 13 episodes of about 24 minutes each, roughly 5 h 12 min in total.
How long does it take to watch MARRIAGETOXIN?
About 5 h 12 min back to back. At two episodes a day it takes 7 days; at one hour a day, about 6 days.
Is MARRIAGETOXIN finished?
Yes. MARRIAGETOXIN has finished airing — the final episode aired June 30, 2026.
Is there a season 2 of MARRIAGETOXIN?
Yes — the story continues in MARRIAGETOXIN 2nd Season (2027).
Where do I start MARRIAGETOXIN?
Start here: MARRIAGETOXIN is the first entry, followed by MARRIAGETOXIN 2nd Season.
Is MARRIAGETOXIN based on a manga?
Yes. MARRIAGETOXIN adapts the manga by Joumyaku.
Who animated MARRIAGETOXIN?
MARRIAGETOXIN was animated by bones film and directed by Motonobu Hori.
Who sings the opening of MARRIAGETOXIN?
The opening, "Kill or Kiss", is performed by Yurina Hirate.
Where can I watch MARRIAGETOXIN?
MARRIAGETOXIN is listed on Crunchyroll, YouTube, Bilibili TV, iQ. Availability varies by region — check the streaming links on this page.