
Marriage Toxin
マリッジトキシン
In feudal Japan, Hikaru Gero, an elite assassin, navigates the underworld to protect his sister and uncover the truth behind his family's power.
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!
Editorial mood guide by WatchMoodly Editorial Team · Base catalog metadata via TMDB.
8.7/10 avg · 13 ratings
Mood Rationale & Viewing Guide: Should You Watch Marriage Toxin?
Within our mood classification system, Marriage Toxin aligns strongest with a chill / funny / happy viewing mood (relaxing shows perfect for unwinding after a long day). Key tonal signals include dark romance, revenge thriller, must watch, underrated gem, feudal japan, slow burn, making it a strong pick when you want a story driven by those themes without spoilers.
Watch If…
- •You want an animation, action & adventure, comedy tv series released in 2026.
- •You enjoy themes centered on dark romance, revenge thriller, must watch, underrated gem.
- •You want a self-contained story that matches your current mood.
Skip If…
- •You are looking for a purely lighthearted, zero-stress comfort watch without dark or tense themes.
- •You only watch completed stories and prefer not to wait for upcoming episodes.
Official Trailer

Official Streaming Platforms
Frequently Asked Questions About Marriage Toxin
Where can I watch Marriage Toxin (2026) legally online?
Marriage Toxin is available through official platforms including Crunchyroll. Use the streaming links on this page to open the licensed release directly.
What mood and genres does Marriage Toxin fit best?
Marriage Toxin is classified under Animation, Action & Adventure, Comedy and best matches a chill or funny or happy mood, featuring elements of dark romance, revenge thriller, must watch, underrated gem, feudal japan.
How many episodes does Marriage Toxin have?
Marriage Toxin (2026) is currently marked as ongoing.
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