Wasn't I the Heroine of a Regret Novel?

Synopsis

A brief sentence flowed from her husband's mouth. "Let's get a divorce." Vendia Rose dropped the divorce papers she had just handed to him. 'W-Wait, this isn't how it's supposed to go...?' Believing she was in a "regret genre" story, Vendia thought that demanding a divorce would spark the beginning of true love with the male lead. However, contrary to her expectations, the divorce was finalized in a flash, leaving her to live in a rundown mansion she received as alimony. 'Alright, let's take this opportunity to live as a god-tier landlord!' But how much time had passed since she made that ambitious resolution? "When are you going to install the fireplace?!" A nightmare tenant demanding a working fireplace in the middle of summer. "M-Master, should I bury them?" A property manager with a suspiciously dark mindset that heavily contrasts with his innocent appearance. "It has been a while, Madam." And even her ex-husband, who had so coldly accepted the divorce?! Why is everyone starting to gather here?!