Marriage Toxin

2026
Returning Series
Animation · Action & Adventure · Comedy
~24m / ep
1 season
8.2/10

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!

All seasons

Latest: Season 1 · 2026

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E1. The Poison Master's Search for a Bride
Apr 7, 2026 · 24m
An assassin must marry to appease his clan and save his sister. Small problem: He doesn't know how to date.
E2. What Is "Charm," Anyway?
Apr 14, 2026 · 24m
Kinosaki takes Gero to practice dating in a floating art museum that becomes the scene of a heist.
E3. My First
Apr 21, 2026 · 24m
Gero fights a Water Master to rescue Himekawa, but his real challenge is taking her on a date afterward.
E4. The Sound Master
Apr 28, 2026 · 24m
Gero goes undercover as a student to guard a corporate heiress, but he isn't the only Master on campus.
E5. Lord Chladni
May 5, 2026 · 24m
E6. Episode 6
May 12, 2026 · 24m