Even a Demonic Son-in-Law Can Find a Protective Wife

[A nontraditional live-in son-in-law story] + [A System for grinding experience] + [Ghost Valley Eight Desolations setting] + [A couple with complementary personalities and a husband who lives off his wife] + [A fiercely protective wife] + [Consistent characterization]

“Liu the Fiend, you use living souls to forge your evil sword. Even if we, the righteous, die, we won't let you get away with it!”

“You sanctimonious hypocrite! One day someone will take you down!”

Liu Bi'an wiped his Soul-Devouring Sword and looked at the defeated men who still wouldn't stop chattering and calling themselves righteous.

“If you love talking so much, come sit in my Human Emperor Sword. It's lively in there.”

“Liu the Fiend, you only dare act tough because that demon woman from the Wen family has your back. Have you got the guts to fight one-on-one?”

“One-on-one?” Liu Bi'an smiled, patted his Twin Fish Pendant, and stepped aside. Then he sent a message: “Wife, someone wants to fight you one-on-one.”

A note rang out from the Twin Fish Pendant, and in an instant it cut the challenger to pieces.

The righteous men stared in shock.

“I hear that demon woman from the Wen family is a sound cultivator who can bewitch people with a single word and kill without a trace!”

“She is terrifying! We're doomed!”

“Liu the Fiend... no, Young Master Liu, we didn't know who we were dealing with. Could you spare us this once? We promise never to bother you again!”

Liu Bi'an put away the Twin Fish Pendant and drew his Soul-Devouring Sword with an eerie smile.

“The thing I hate most is an apology after the fact. Please, everyone, step inside the sword for a chat.”

[Note: For the purposes of this story, the heroine Wen Lingyun is assumed to have the “A Promise Is a Promise” trait, meaning she starts with a favorable impression of the protagonist. The story also features multiple female love interests. Please don't read if that's not your thing.]