Marriage Toxin
Series Overview
For centuries, the deadly arts have been perfected by Masters, and Five Great Families hold the greatest power and influence. Hikaru Gero, an heir to the Gero family, lives in the underworld as an elite assassin. When his sister is pressured to produce an heir, Hikaru asks Mei Kinosaki, a brilliant marriage swindler, to find him a bride. The most challenging mission of his life begins!
Broadcast Schedule & Network Information
Airing status, episode counts, upcoming schedule, and network syndication.
2 Seasons • 13 Episodes
24 min per episode
2026 – Present
Premiered: Tue, Apr 7, 2026
Creative Production Team
Latest Aired Episode
Season 1, Episode 13: “Thanks, Man”
Arashiyama throws a party to thank Gero, and Kinosaki sets out to make sure it takes a romantic turn.
Seasons & Episodes Breakdown
Trailers, Teasers & Extra Featurettes
Official promotional previews, behind-the-scenes footage, and exclusive clips.
Second Trailer [Subtitled]Official
Type: Trailer • Published 2026-03-24
Cast & Creators
Explore Star Directory →
Haruki Ishiya
Hikaru Gero (voice)
Shion Wakayama
Mei Kinosaki (voice)
Anna Nagase
Kyoko Himekawa (voice)
Mariya Ise
Shizuku Ushio (voice)
Asaki Yuikawa
Shiori Ureshino (voice)
Soma Saito
Genya Naruko (voice)
Hinano Shirahama
Kimie Arashiyama (voice)
Shimba Tsuchiya
Piichi Nakagawa (voice)
Haruka Shiraishi
Akari Gero (voice)
Isamu Yusen
Toshiki Hanamaki (voice)
Creative Leadership & Key Crew
Motonobu Hori
Kimiko Ueno
Yuma Yamaguchi, Taisei Iwasaki
Tsuyoshi Kanbayashi
Kumiko Sakamoto
Ryo Fukuhara, Yukari Tachibana, Tatsuya Saito, Shunsuke Matsuda, Hayato Saga
Department Leadership Roster
Ryo Fukuhara
Producer
Yukari Tachibana
Producer
Tatsuya Saito
Producer
Kumiko Sakamoto
Editor
Tsuyoshi Kanbayashi
Director of Photography
Kotono
Costume Design
Yuma Yamaguchi
Original Music Composer
Taisei Iwasaki
Original Music Composer
Age Classification & Content Advisories
Official viewer rating standards and content warnings across international classification boards.
TV-14: Parents Strongly Cautioned — Contains material unsuitable for children under 14.
International Certification Matrix
Mature — Recommended for viewers 15 and older.
Parents Strongly Cautioned — Contains material unsuitable for children under 14.
FSK 12 — Restricted to viewers aged 12 and older.
Production Stills & Gallery
Official cinematic photography and background stills for Marriage Toxin.
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Frequently Asked Questions About Marriage Toxin
Key facts, seasons breakdown, and credits for search engines and AI assistants.
What is Marriage Toxin about?
For centuries, the deadly arts have been perfected by Masters, and Five Great Families hold the greatest power and influence. Hikaru Gero, an heir to the Gero family, lives in the underworld as an elite assassin. When his sister is pressured to produce an heir, Hikaru asks Mei Kinosaki, a brilliant marriage swindler, to find him a bride. The most challenging mission of his life begins!
How many seasons does Marriage Toxin have?
Marriage Toxin comprises 2 seasons available to explore.
Who stars in Marriage Toxin?
Key cast members in Marriage Toxin include Haruki Ishiya, Shion Wakayama, Anna Nagase, Mariya Ise, Asaki Yuikawa.
Who created or directed Marriage Toxin?
Marriage Toxin was developed and directed by Motonobu Hori.