Son-in-law? Billionaire? No! I'm the Villain Boss

Is the useless son-in-law actually a Mafia boss hiding his identity?

Don't worry; your fiancée is lying on my bed. She even said she wants to give me her first time.

The most talented heir wants to turn me into a beggar?

You should check again; your beloved stepmother and sister are my spies.

The God of War Returns?

I'm sorry, your wife calls me husband; your daughter even wants to be my woman.

Are you the male lead?

Hahahaha... Sorry, I'm the villain.