How to Send Your Husband to Hell

Story

Helena Winston, the dazzling diva of noble society, is thrust into scandal when the crown prince unexpectedly confesses his love. To protect the Empire—and her own reputation—the Empress proposes a secret deal: marry a man of her choosing and expose his secrets. Her target? Count Benjamin Ischpern, a veiled noble rumored to be tied to enemies of the throne. As Helena begins her life in an arranged marriage, one thing becomes clear—there is indeed far more to this man than it seems. So she swears: she will bring her husband to ruin, no matter the cost.

Synopsis via AniList (English).