Marriagetoxin

Action / ComedyTV13 EP/7 Apr 2026
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Oshimeter

8.3
652 Ratings
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Synopsis

Hikaru Gero can kill you with poison before you even notice he's in the room. What he absolutely cannot do is talk to a woman without it being a disaster. As the heir to one of the five most powerful assassin families in a world where Poison Masters have perfected the art of killing for centuries, Hikaru has zero social skills outside of, well, murder. The problem is, his family needs an heir, and if Hikaru doesn't get married, his sister gets forced into bearing one against her will. His solution? Spare the life of his current assassination target, a cross-dressing marriage swindler named Mei Kinosaki, in exchange for dating coaching. An elite assassin learning how to flirt from a con artist he was supposed to kill, that's the dynamic, and it works way better than it has any right to. The action hits hard thanks to Bones Film handling production, and the comedy comes from Hikaru being genuinely hopeless at anything that doesn't involve lethal toxins. If you liked the found-family chaos of Spy x Family or the way Assassination Classroom mixed genuine threat with humor, this scratches a similar itch. There's also a bit of that Kaguya-sama energy in how the relationship stuff plays out, strategic, awkward, and weirdly high-stakes. It's a shounen that balances clan politics, assassin throwdowns, and the quiet tragedy of someone who never learned how to just be a person. Coming in 2026, and honestly the premise alone earns a spot on the watchlist.

Episode Guide

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Community Feed

Someone and 94 others rated 9.3
EP 1
akumapulse★★★★☆Anime

Marriagetoxin sounds completely ridiculous on paper, but somehow works way better than it has any right to. Hikaru Gero is heir to a legendary clan of poison assassins, one of the most dangerous guys in the underworld. He can handle life-or-death missions without flinching, but when his family orders him to find a wife to continue the bloodline, he's totally lost. He's spent his whole life learning to kill, not connect. That's where Mei Kinosaki comes in - legendary marriage swindler, insanely charismatic, and an expert at reading people. It's John Wick meets Hitch, a deadly assassin who treats dating like a high-risk mission paired with a smooth-talking coach who has to teach him how to be human. The characters carry hard. Gero is great - calm and terrifying in combat, but falls apart in normal social situations. He's not dumb, he's just never had a normal life. That contrast is funny and makes you root for him. Small details like his earnest hobbies add a lot of charm. Kinosaki steals every scene. The chemistry between Gero and Kinosaki is the best part. Not forced misunderstandings, but real trust and a buddy-comedy dynamic. One understands violence, the other understands people. The supporting cast is stronger than expected too, especially the rival Masters who bring style and unpredictability. Action is a highlight. Poison abilities could have been boring, but every fight feels fresh with inventive tactics and weird abilities. No endless power escalation, just fun and creative. Best of all, the story actually moves. Relationships evolve, conversations matter, it doesn't freeze for 20 episodes. Biggest issue is it juggles too much - romance, comedy, clan politics, Masters, drama. It mostly balances, but some characters feel rushed and fade after their arc. The structure gets formulaic mid-season and tonal shifts can be abrupt. Visually it's inconsistent. Action is fantastic - energetic, colorful, neon and stylish. Quiet dialogue scenes lack the same polish. I went in expecting goofy action-romance and got one of the most fun mashups in a while. Loud, weird, funny, and surprisingly heartfelt. At its core it's about loneliness, family pressure, and learning to form genuine connections. Messy, chaotic, but incredibly fun. If you like Spy x Family or Sakamoto Days, easy rec. Need Season 2 immediately.

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