He Chose the Heir, So I Buried His Empire（飞）

When Dante Russo has his wife Serafina's delivery delayed so his late brother's widow can deliver the family's male heir first, their daughter dies. But Serafina survives—and she is no powerless outsider.

Secretly the daughter of a feared Mafia don, she fakes her death, watches Dante mourn, and dismantles the Russo empire piece by piece. When he finally learns who his wife really is, the woman he sacrificed has already taken everything.