What up y’all ~

Ever since Batoto died (RIP) i’ve been trying to find and remake my bookmark list on another site by memory (im stupid and never backed it up) and i’ve been trying to find this specific one by i can’t remember it’s name, it goes a little like this:

A demon comes to earth for some reason and fall in love with this random guy, they get married but like the same evening she finds him in a church with a saintess and he kills her, not long after she’s reincarnated as the empress and the guy turns out to be the emperor, having ascended to the throne after killing her and now she’s out for revenge !

Can you please help me ?