Synopsis

Satoko hopes to secure a marriage that will please her noble family before her illness cuts her life short. But when the assassin Shinpei threatens her future, she makes a desperate offer: marry her instead. What begins as a gamble to stay alive draws her into a dangerous bond with a man whose devotion may be as frightening as his profession.

Latest news

Anime

Firefly Wedding Shares Creditless Opening and Ending Videos

Watch the opening featuring iri’s “Period” and the ending set to TOOBOE’s “Yumegokochi.”

Oct 10, 2026

Anime

Firefly Wedding Spotlights Shinpei Goto in New Trailer

Koki Uchiyama voices the assassin in the new character preview ahead of the anime’s October 9 premiere.

Oct 8, 2026

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