Ditsy Wife: Mysterious Husband is Unfathomable

By a series of freakish accidents, she provokes the feared and mysterious “God of Night”.
When someone bullies her, he says, “Only two types of people bully my wife: those who haven’t crossed her path, and those who have already died. Which do you want to be?”
When someone questions her, he says, “Everything my wife does is right! Those who disagree can have a little chat with me!”
When he goes home, he pleads in a low voice, “Wifey~ Can I not sleep in the study today?”
“You can consider sleeping on the streets.”
“Well, I’ll sleep in the study, then.”
At night, he abducts his freshly-showered wife into the study. She shrieks, “Sheng Nanxuan! What are you doing?!”
“Sleeping… in… the… study!”
The next day, his wife dashes out of the room with tears in her eyes and a sore waist. That isn’t what she meant by “sleeping in the study”…