Let’s Go To Our Home, Why Are You Going To The Palace?

She spent her entire life sacrificing for her family, only to face the fate of being sold off as a third wife.  
The only way to escape this terrible situation? 
Marriage.  
I refuse to live like a pushover anymore!  
Then, an angelic newcomer suddenly appears in the dreary, lifeless Magic Department.  
Handsome, kind, and with a flawless personality.  
But why is he so determined to pursue me?  
“From now on, have lunch with me only.”  
“Quit working overtime… Spend the rest of your time with me.”  
“Senior, will you go on a date with me again tomorrow?”  
Falling in love with this pure-hearted newcomer who only had eyes for her, she ended up getting married at lightning speed.  
Finally free from her hellish family, she thought she could now enjoy a peaceful, happy life.  
But… 
Her sweet and affectionate husband turns out to be the insane Third Prince?!  
This is a fraudulent marriage!